i checked the live data with the both the old and borrowed sensor. 12V Power and ground are good. One of the main ways that the engine controller uses that information is to determine the amount of fuel that. 70 volt during KOEO. 6 lb/min, change from English units to metric units to obtain accurate. Can someone with a monitor check their MAF readings for me? Trying to diagnose an overfueling issue and I believe tha MAss Airflow Sensor could be the issue. The other sensor is heated to 200° C. I also show you how you can figure out the wires without a wiring diagram. Absolute Throttle Position-- The absolute throttle position (not the relative or learned) throttle position. CLEANING FORD MAF SENSORS For some reason, Ford vehicles have had a history of MAF sensor problems caused by contamination. There is the full throttle/full load test others use and that is measure the MAF sensor readings at full throttle in 2/3 gear and the engine at maximum rpm. When the mass, and speed, of air increases inside the intake tube, the heated sensor is cooled. Mass Air Flow Sensor Testing. This integral part of your computer directed engine mechanism is responsible for noting information on the air density and volume that goes into your engine. A mass air flow (MAF) sensor responds to the amount of air flowing through a chamber containing the sensor. Be EXTREMELY careful not to break the wires again. Step 2: Take apart your air intake system and find the MAF sensor. The information is then relayed to the engine CPU, so the computer can adjust the amount of fuel entering the combustion chanmber, hence producing the ideal. This article applies to the Ford F-150 (2004-2014). Besides, what should a MAF read? Attach an analog voltmeter to the appropriate MAF sensor output terminal. Dec 17, 2002 · The air temperature sensor, the engine temperature sensor, and the Oxygen Sensors (O2 or HEGO) are also used to help determine fuel and timing requirements. It is intended to be insensitive to the density of the air. The mass airflow sensor (commonly abbreviated to MAF) is one of the most important engine management sensors. Newer vehicles are adding more and more sensors for multiple reasons including. Such a reading indicates that the power input to the sensor is correct. Re: MAF sensor on 1996 Ford Ranger. You do not have a MAF sensor. 0 engine seems to be more susceptible to the problem than other Ford engines. Absolute Throttle Position-- The absolute throttle position (not the relative or learned) throttle position. Thanks for your input. SO when the engine speed is brought up, naturally the sensor gets colder, so the MAF increases the voltage to heat the sensor and that amount of voltage is sent to the ECM to determine the amount of fuel deliver necessary for the engine speed. This is not the most definitive list on the subject, but does cover the majority of symptoms I've seen on these types of Ford mass air flow sensors: MAF Codes that light up the check engine light (CEL) on your instrument cluster. 5V when snapping the throttle open and closed. both are giving readings which fluctuate from about 11 to 15 g/s. 157 lb/min, back to 0. a pre-calculated voltage/current value. Aug 09, 2012 · 1,071 Posts. This is to be maintained at a certain temperature. 4L? It has thrown a code about reading too lean, I dont remember the code number, but it was reading too lean on Bank 1. 12V Power and ground are good. was ~ 14-16. I understand that MAF sensor reading will be relied upon to help eliminate EBP sensor input. Hook up a scan tool with the ability to monitor sensor valves (PIDS) and pull up the mass air flow sensor. The signal from the sensor is shown and can be downloaded. I won't go into a detailed discussion of MAF sensor operation here. -At idle the stock Ford sensor and 73mm maf had a voltage of 1. Ford B-max | EcoBoost- MAF Sensor. #2 · Feb 1, 2006. specific voltage at idle. P1102- MAF sensor issue. P0102 is an OBDII trouble code indicating that the mass air flow sensor (MAF) is reporting inaccurate values. Any fluctuation, or out of specification reading indicates a mass air flow sensor, or related wiring concern. In that case, the car's computer cannot control the fuel-to-air ratio because the sensor does not send any information to it. To make it happen we need a wiring harness. For example, if the MAF sensor specification is 4 to 6 gm/S and your scan tool is reporting. Be EXTREMELY careful not to break the wires again. Bumping the MAF sensor's hot wires into anything or touching them can cause them to break off the MAF sensor (this too I can vouch for from personal. Perform the same checks while lightly tapping on the sensor, or heating the sensor with a blow dryer. A mass air flow (MAF) sensor responds to the amount of air flowing through a chamber containing the sensor. The value you get, 'should' be ~80% of the rated horsepower. With the engine running at idle, use a DVOM to verify that there are at least 10. The voltages are around 0. A faulty MAF sensor can cause your vehicle to run too rich or run too lean. #4 · Jul 3, 2014 (Edited) YESThe MAF sensor is absolutely necessary for any throttle body car. Ford B-max | EcoBoost- MAF Sensor. All you need is a multimeter. Low voltage mass air flow sensor (MAF. Ford F-150: Electrical Sensor Specifications. Maybe someone will have an idea what is happening. CLEANING FORD MAF SENSORS For some reason, Ford vehicles have had a history of MAF sensor problems caused by contamination. Due to the importance of correct reading, MAF should always be protected by air filters to prevent dust and other debris being. It should read 0. 0L, B2300 2004 B4000 Mercury Mountaineer & Sable Selected Model Replacement XF2F12B579AB MAF 74-50011: Mass Air Flow - Amazon. I thought the ford sensors were voltage based and not frequency based so you can get readings without a scope. I cannot get it to read higher than 2. The older AC Delco MAF sensors (like a 2. A failure in the MAF sensor or circuit should set DTC P0101, DTC P0102, or DTC P0103. MAF Sensor malfunction that DOES NOT light up the CHECK ENGINE LIGHT (CEL). The MAF sensors are NOT the same between the various engine as they have different calibration curves. We should see a reading of 10,000 ohms or more. 5v (and ran terrible) -My TPS is at. Your car or truck has either a P0171, P0174 lean fault code or both stored in the pc, these. 5 volts during the last 80 warm-up cycles. P0102 – Mass or Volume Air Flow Circuit Low Input. 5V at idle to around 4-4. Now, as you pump up the vacuum pump, the MAP sensor should make your multimeter register the following Hertz (Hz) values at the following vacuum values (they may differ a little on your specific Ford 4. If the reading is. Cardone Reman® Mass Air Flow Sensor. 0 volts output with key-on-engine-off and 0. Do not mess with it. It is showing output of 1. 4 volts during the last 80 warm-up cycles. There are two sensors in the MAF. With the Key On and the Engine Off and without any vacuum applied to the MAP sensor, your multimeter should register around 152 Hertz (Hz). Nothing more nothing less, check those 3 things. Jump to Latest Follow A forum community dedicated to Ford F-series owners and enthusiasts with a Power Stroke diesel engine. It measures the amount and the density of the air that is entering the intake manifold at any given moment. No dealership or service provider, when contacted, has ever been able to provide us with evidence to support this "myth," and in fact, our investigations have revealed that even authorized dealerships are simply speculating and do not have the test equipment necessary to know whether the sensor has failed or why. (Or maybe used your own OBD scanner to extract the car faults). Jan 24, 2020 · The MAF or mass airflow sensor is an essential part of a fuel-injected engine. Ford Lightning MAF, Infiniti Q45 MAF, GM LT1/LS1/LS2 MAF. A MAF sensor can be a flow restriction in cases where the MAF housing is the smallest portion of the intake system. 4-liter V-8. So your car's CEL (always check Engine Light) is on and also you had the codes scanned at a local parts shop. Idle RPM was swinging between 601RPM and 748RPM, so with a 150RPM. The mass airflow sensor is a key sensor in your car. I recommend using a digital multimeter but an analog multimeter can also be used. 366 lb/min and returning the revs to idle, at 872 rpm the MAF is reading 0. The MAF connector may have up to six wires if. P0102 is an OBDII trouble code indicating that the mass air flow sensor (MAF) is reporting inaccurate values. 6-liter V-8 and the 5. It seems that a "missing" engine culprit is actually the computer's sensor inside the Mass Air Flow Sensor (MAF). Hot-wire MAF elements are very fragile. These units came from a 1992 Mustang. Actual grams per second, voltage or frequency readings should come from the MAF signal data on the scan tool at specified rpm settings. Reaches 100% at. Mass Air Flow Sensor Testing. P1102- MAF sensor issue. MAF Sensor Voltage: With the MAF sensor connected, probe the MAF sensor connector between MAF and the negative battery terminal and start the engine. SO when the engine speed is brought up, naturally the sensor gets colder, so the MAF increases the voltage to heat the sensor and that amount of voltage is sent to the ECM to determine the amount of fuel deliver necessary for the engine speed. Is this new strategy "changing the mission" or original intent of the MAF sensor? 2003 6. Hook up a scan tool with the ability to monitor sensor valves (PIDS) and pull up the mass air flow sensor. The more air that crosses the element, the cooler the element gets and the more voltage required to maintain its regulated temperature. A mass air flow (MAF) sensor responds to the amount of air flowing through a chamber containing the sensor. MAF Sensor by Delphi®. 4-liter V-8. #5 · Aug 9, 2012. This list covers the majority of symptoms I've seen on these types of Ford mass air flow sensors: MAF Codes that light up the check engine light (CEL) on your instrument cluster. Ford Mustang 2008, Mass Air Flow Sensor by Cardone Reman®. Jump to Latest Follow A forum community dedicated to Ford F-series owners and enthusiasts with a Power Stroke diesel engine. One of the main ways that the engine controller uses that information is to determine the amount of fuel that. 420 at tickover. One sensor measures the ambient temperature of the incoming air. P0103 MAF Signal High Input to PCM. You do not have a MAF sensor. The 2005 Ford F-150 was available in 45 different trim packages, between the two-wheel drive and four-wheel drive models. The intake consists of a series of tubes, usually plastic, but sometimes metal. MAF or Mass Airflow sensor is a tool to read the airflow intake on engines. Apr 17, 2013 · Mate this is one easy job you can buy the maf sensor cleaner from supercheap for about $25 and use it every 5 thousand k's as i have a k&n air filter, haven't disconnected battery yet due stereo code and ford can't find the code. The peak MAF reading should exceed forty times the engine's displacement. with engine air flow. Sometimes, the MAP sensor is used to monitor EGR operation, and doubles as a back up to the MAF sensor. These are the codes applicable to the EEC-IV processor Ford vehicles. No dealership or service provider, when contacted, has ever been able to provide us with evidence to support this "myth," and in fact, our investigations have revealed that even authorized dealerships are simply speculating and do not have the test equipment necessary to know whether the sensor has failed or why. 15 at idle and the highest I've seen it go is the 1. Jun 14, 2015 · The Powertrain Control Module monitors a vehicle operation rationality check by comparing Throttle Position (TP) to Mass Air Flow readings. False readings from the MAF sensor can affect the response of the oxygen sensor. Ford Mustang 2008, Mass Air Flow Sensor by Cardone Reman®. Also, my Autoenginuity scanner. The job of the mass air flow sensor. 413 which is about as low a reading as it has given so far. 157 lb/min, back to 0. The trainer says that Ford has these problems more than other makes and the 4. Also I would check the voltage of the tps sensor with ignition on but engine not running the throttle plates closed voltage should read. # mpn20227. Besides, what should a MAF read? Attach an analog voltmeter to the appropriate MAF sensor output terminal. It sounds like ur problem is c, check for leaks in intake track (intake tube, throttle body. When it comes to MAF sensors, communication with the ECM is key. MAF Sensor Voltage: With the MAF sensor connected, probe the MAF sensor connector between MAF and the negative battery terminal and start the engine. The voltage outputted by the MAF (mafV) is directly related to its resistance. MAF or Mass Airflow sensor is a tool to read the airflow intake on engines. These units came from a 1992 Mustang. Suffice it to say that a MAF sensor allows the. P1101 MAF Sensor Circuit Output Voltage low During KOEO Self Test. Your car has a lot of sensors, and this is just one that helps your car run properly. This integral part of your computer directed engine mechanism is responsible for noting information on the air density and volume that goes into your engine. 0 engine seems to be more susceptible to the problem than other Ford engines. The mass airflow sensor (commonly abbreviated to MAF) is one of the most important engine management sensors. The mass air flow (MAF) sensor, part of your vehicle's electronic fuel injection system, is responsible for calculating the total amount of air entering the engine. Many MAF units have screens and they can get clogged up easily, clean using a CRC 05110 spray. 0L, B2300 2004 B4000 Mercury Mountaineer & Sable Selected Model Replacement XF2F12B579AB MAF 74-50011: Mass Air Flow - Amazon. 5-17 grams/second at 2500 RPM. BAD gas mileage. Fuel Trim code (s). Feb 01, 2006 · Joined Dec 28, 2003. Perfect solution to keep your air intake system performing the way it was designed to Crafted from the highest grade materials for dependable, long-lasting service. The scan tool may report the information in grams per second (gm/S) or pounds per minute (lb/min). If MAF was bad to run 18% lean you MAF would have to be in the 3. It samples a portion of the air, sending a signal to the ECM to calculate the mass of air entering the intake. Come join the discussion about performance, bulletproofing, modifications, classifieds, troubleshooting, maintenance, and more!. Well ive tried a second hand MAF sensor which i borrowed from a local garage to see if the problem persists. The scan tool may report the information in grams per second (gm/S) or pounds per minute (lb/min). A MAF sensor can be a flow restriction in cases where the MAF housing is the smallest portion of the intake system. It tells the PCM that you're trying to accelerate by measuring the increased flow of air that passes over the sensor wire when you open the throttle. Lean and/or Rich code (s). The MAF should be reading around 4. It looks like this reading is 9. Up to 2001 models, this was an inferred, or calculated, value generated by the PCM (powertrain control module) in response to the maximum MAF flow rates observed on hard wide-open throttle (WOT) acceleration. I cleaned the sensor before thich is ese readings and got slight improvements but only slight. 2004 - 2008 Ford F150 - MAF-BARO readings - Solets try this again. It is intended to be insensitive to the density of the air. I recommend using a digital multimeter but an analog multimeter can also be used. These are the codes applicable to the EEC-IV processor Ford vehicles. 5 volts between terminals A and B of the MAF sensor connector. This looks OK to me, but since I don't know anything about the Focus, I'd just like confirmation. #5 · Aug 9, 2012. Alot of muscle car guys gat a larger diameter MAF, and many remove the little screen inside of it, but its. So your car's CEL (always check Engine Light) is on and also you had the codes scanned at a local parts shop. The mass air flow (MAF) sensor, part of your vehicle's electronic fuel injection system, is responsible for calculating the total amount of air entering the engine. The MAF or Mass Air Flow sensor has become a standard part on most. specific voltage at idle. Make sure you get it in correctly the 1st time. A mass air flow (MAF) sensor responds to the amount of air flowing through a chamber containing the sensor. In answer to your question 4. 420 at tickover. 5V at idle to around 4-4. Mass Air Flow Sensor Testing. Jump to Latest Follow A forum community dedicated to Ford F-series owners and enthusiasts with a Power Stroke diesel engine. The information is then relayed to the engine CPU, so the computer can adjust the amount of fuel entering the combustion chanmber, hence producing the ideal. CLEANING FORD MAF SENSORS For some reason, Ford vehicles have had a history of MAF sensor problems caused by contamination. 366 lb/min and returning the revs to idle, at 872 rpm the MAF is reading 0. It also reads crucial data about the air that your Ford engine computer needs to properly deliver the right amount of fuel. One of the main ways that the engine controller uses that information is to determine the amount of fuel that. MAF or Mass Airflow sensor is a tool to read the airflow intake on engines. 4L? It has thrown a code about reading too lean, I dont remember the code number, but it was reading too lean on Bank 1. 207,700 MILES. A failure in the MAF sensor or circuit should set DTC P0101, DTC P0102, or DTC P0103. 2001 F250 SD V10 4X4 - Just arrived Feb 2011. My MAF reading on my scan gauge reads. 413 which is about as low a reading as it has given so far. Testing the MAF (Mass Air Flow) sensor on your Ford truck or SUV or full size van is a very simple and easy affair. specific voltage at idle. Drop it off at our shop and pick it up a few hours later, or save time and have our Delivery mechanics come to you. 03/31/2021 10/22/2018. More revving, 3087 rpm gives 2. However, before we get to this test there are a lot of inspections to perform. The change in voltage. 420 at tickover. com FREE DELIVERY possible on eligible purchases. The MAF sensor can also be dirty or partially plugged with carbon causing a low reading. MASS AIR FLOW SENSOR INVESTIGATION. - So for example the 1. I cleaned the sensor before thich is ese readings and got slight improvements but only slight. The mass airflow sensor (commonly abbreviated to MAF) is one of the most important engine management sensors. In my Ford van, the mass air flow sensor sits right behind the air filter, and is easy to reach. Nothing more nothing less, check those 3 things. AVG reading is around 1. Dec 17, 2002 · The air temperature sensor, the engine temperature sensor, and the Oxygen Sensors (O2 or HEGO) are also used to help determine fuel and timing requirements. So I have the truck back in, replaced the MAF sensor and reset. Oct 16, 2011 · MAF sensor readings in g/s ? LongTerm +14% short OK, need help Hello community, I am fighting with my hoe about increasing mpg. # mpn20227. engine applications, and is mounted in the intake air stream just past the air. Cardone Reman® Mass Air Flow Sensor. The mass air flow (MAF) sensor, part of your vehicle's electronic fuel injection system, is responsible for calculating the total amount of air entering the engine. Basically, the MAF sensor measures the amount of air flowing into the engine through the air cleaner assembly, which contains the air filter and connects to the throttle body. It measures the volume of air that the engine is taking in. 0L) Example 2 A sensor out of calibration may rise. A Mass Airflow -- MAF -- Sensor in a modern Ford vehicle is located inside the air intake duct. Values should change rather quickly on acceleration, but values should remain fairly stable at any given RPM. With the engine idling, the sensor should be putting out a steady 2. 23 volts (Refer to equivalent grams/second chart in GO to Pinpoint Test DC ) in continuous memory or key ON and engine running indicates a hard fault. A MAF sensor can be a flow restriction in cases where the MAF housing is the smallest portion of the intake system. com FREE DELIVERY possible on eligible purchases. Drop it off at our shop and pick it up a few hours later, or save time and have our Delivery mechanics come to you. Make sure you get it in correctly the 1st time. In answer to your question 4. 207,700 MILES. Seeing 150g/m at idle, maxing out at 600g/m around 2000rpm part throttle. How the MAF Works. AVG reading is around 1. 55grams/second minimum to 1. "The scan tool reads the MAF value and displays it in grams per second (gm/s). Sometimes, the MAP sensor is used to monitor EGR operation, and doubles as a back up to the MAF sensor. 6 lb/min, change from English units to metric units to obtain accurate. Do not mess with it. Perform the same checks while lightly tapping on the sensor, or heating the sensor with a blow dryer. 6-liter V-8 and the 5. It seems that a "missing" engine culprit is actually the computer's sensor inside the Mass Air Flow Sensor (MAF). A failure in the MAF sensor or circuit should set DTC P0101, DTC P0102, or DTC P0103. - So for example the 1. 2001 F250 SD V10 4X4 - Just arrived Feb 2011. If MAF was bad to run 18% lean you MAF would have to be in the 3. Perfect solution to keep your air intake system performing the way it was designed to Crafted from the highest grade materials for dependable, long-lasting service. A MAF sensor measures the density of the air entering the intake manifold. I am not sure how the van is supposed to run, but I seems like it lacks power. both are giving readings which fluctuate from about 11 to 15 g/s. Some vehicles come equipped with both a MAP and MAF sensor, usually forced induction systems like turbocharged and supercharged models. One of the more common Ford Focus problems centers around your mass air flow sensor. Hot-wire MAF elements are very fragile. Ford Mustang 2008, Mass Air Flow Sensor by Cardone Reman®. 07 g/s so was your RPM about 833 or idle?. If you are able to view the MAF sensor signal voltage on an OBD2 scanner, then do so. I understand that MAF sensor reading will be relied upon to help eliminate EBP sensor input. How the MAF Works. To review - the MAF contains a hot film panel that the ECM uses to measures air flow. -At idle the stock Ford sensor and 73mm maf had a voltage of 1. In this case, a test drive was recorded (Figure 3) on a 2. AVG reading is around 1. 5-6 grams/second at idle and around 11. Often mass air flow sensor readings are measured at idle, 1,000 RPM, 2,000 RPM and 3,000 RPM. from reading other forums non ford specific all reading seem to equal engine. CLEANING FORD MAF SENSORS For some reason, Ford vehicles have had a history of MAF sensor problems caused by contamination. Hook up a scan tool with the ability to monitor sensor valves (PIDS) and pull up the mass air flow sensor. Drop it off at our shop and pick it up a few hours later, or save time and have our Delivery mechanics come to you. The job of the mass air flow sensor. When it comes to MAF sensors, communication with the ECM is key. Basically, the MAF sensor measures the amount of air flowing into the engine through the air cleaner assembly, which contains the air filter and connects to the throttle body. 4 volts during the last 80 warm-up cycles. The change in voltage. With the Key On and the Engine Off and without any vacuum applied to the MAP sensor, your multimeter should register around 152 Hertz (Hz). I also show you how you can figure out the wires without a wiring diagram. It uses a hot wire element to measure the amount of air entering the engine. 5 volts between terminals A and B of the MAF sensor connector. 4L? It has thrown a code about reading too lean, I dont remember the code number, but it was reading too lean on Bank 1. The MAF or Mass Air Flow sensor has become a standard part on most. #2 · Feb 1, 2006. The ECU uses this information to determine how much fuel to inject. The MAF sensor simply measures the mass (amount) of air coming into the engine so that the PCM can add the correct amount of fuel. engine applications, and is mounted in the intake air stream just past the air. Obtain sensor specifications from a reliable source; you can send us an e-mail from the Help Link and we can assist with most information. Quick test to tell if Mass Air Flow Sensor is bad or dirty which could be causing your car or truck to run bad or keep cutting off. Ford F-150: Electrical Sensor Specifications. Calculated Load Value-- Indicates a percentage of peak available torque. Electrical sensors play a major part in how your truck runs. Over time the Escape MAF sensor in your Ford can go bad. Hook up a scan tool with the ability to monitor sensor valves (PIDS) and pull up the mass air flow sensor. This looks OK to me, but since I don't know anything about the Focus, I'd just like confirmation. P0171 and P0174 Codes - Don't change an Oxygen Sensor Before Reading This. I would also recommend monitoring MAF values while driving the vehicle and checking readings while the concern is. Second, most MAF sensor-equipped Ford products make use of a PID (Parameter IDentification) called BARO (barometric pressure). 5v (and ran terrible) -My TPS is at. The mass air flow (MAF) sensor, part of your vehicle's electronic fuel injection system, is responsible for calculating the total amount of air entering the engine. MASS AIR FLOW SENSOR INVESTIGATION. 158 X X MAF sensor went above 4. P0103 MAF Signal High Input to PCM. Repair and retest. The mass airflow sensor (commonly abbreviated to MAF) is one of the most important engine management sensors. Ford Mustang Mass Air Flow Sensor. (Sample from 2009 Ford Focus 2. The voltages are around 0. at the moment it about 12mpg 80% highway, 20% town. 12V Power and ground are good. I have been trying to find more info on the IAT sensor. It looks like this reading is 9. i checked the live data with the both the old and borrowed sensor. Be EXTREMELY careful not to break the wires again. Sometimes, the MAP sensor is used to monitor EGR operation, and doubles as a back up to the MAF sensor. The mass airflow sensor or MAF sensor, is. 5V when snapping the throttle open and closed. All you need is a multimeter. Secondly, how many miles does a MAF sensor last?. I have been trying to find more info on the IAT sensor. Electrical sensors play a major part in how your truck runs. The benefits of a new mass air flow sensor for Ford F250 include better torque and horsepower, a more accurate air flow reading and improved fuel economy. Here is a video on how you can test your MAF Sensor using a basic $5 Multimeter. MAF systems have a relatively poor response to transient. PLEASE provide some numbers to compare to before I waste $150 on a part. Any fluctuation, or out of specification reading indicates a mass air flow sensor, or related wiring concern. Then, measure the voltage between MAF sensor connector terminals C and D. Contacted hotline about the block off test and they said the PPT now factors in MAF readings to determine a slightly open EGR and it is no longer required. 03/31/2021 10/22/2018. 157 lb/min, back to 0. The mass airflow sensor or MAF sensor, is. The diagnostic tests ask you the following: Is the MAF PID value 1. The mass air flow (MAF) sensor, part of your vehicle's electronic fuel injection system, is responsible for calculating the total amount of air entering the engine. 4 volts during the last 80 warm-up cycles. Suffice it to say that a MAF sensor allows the. Some vehicles come equipped with both a MAP and MAF sensor, usually forced induction systems like turbocharged and supercharged models. It sounds like ur problem is c, check for leaks in intake track (intake tube, throttle body. It is intended to be insensitive to the density of the air. 158 X X MAF sensor went above 4. Perfect solution to keep your air intake system performing the way it was designed to Crafted from the highest grade materials for dependable, long-lasting service. Warm up your vehicle, then connect the positive lead of the multimeter. The MAF should be reading around 4. 0 engine seems to be more susceptible to the problem than other Ford engines. P1101 MAF Sensor Circuit Output Voltage low During KOEO Self Test. T/LB is pin 36 "MAF Sensor Return", LB/R is pin 88 "MAF sensor input" The manual is pretty good at identifying anyplace a reference voltage should. It measures the amount of air (volume) of the intake flow by way of. I've cleaned the MAF, and did an OBD log of the MAF sensor at idle. Clean it with MAF sensor cleaner, then clear the codes to see if P0133 returns. The specifications will give the. Well ive tried a second hand MAF sensor which i borrowed from a local garage to see if the problem persists. In other cases, carbon varnish builds up on the sensor from fuel vapors backing up. Common Symptoms of a BAD Ford MAF Sensor This is not the most definitive list on the subject, but does cover the majority of symptoms I've seen on these types of Ford Mass Air Flow Sensors: 1) MAF Codes that light up the CHECK ENGINE LIGHT (CEL) on your Instrument Cluster. That brings up the question of can your car run without the mass air flow sensor? In this article, we will look at what happens when you disconnect the mass airflow sensor. If your original owner's manual is missing, download a soft copy from https://www. BAD gas mileage. The MAF sensor simply measures the mass (amount) of air coming into the engine so that the PCM can add the correct amount of fuel. I would also recommend monitoring MAF values while driving the vehicle and checking readings while the concern is. 2 to 6 is correct MAF reading for warmed up idle, remember it's calculated PCM looks at IAT and MAS (sensor frequency) to calculate the weight of the air in grams per/sec. More revving, 3087 rpm gives 2. Dirt and oil deposits can build up on the sensor element, adversely affecting readings. 0 volts at 2,500 RPM no load? If not, replace the MAF sensor. The mass air flow (MAF) sensor, part of your vehicle's electronic fuel injection system, is responsible for calculating the total amount of air entering the engine. It measures the amount and the density of the air that is entering the intake manifold at any given moment. 6-liter V-8 and the 5. Mass Air Flow Sensor Testing. a pre-calculated voltage/current value. 4 volts during the last 80 warm-up cycles. The MAF sensor is mounted in the air intake tube which runs vertical in behind the drivers headlight. Jun 14, 2015 · The Powertrain Control Module monitors a vehicle operation rationality check by comparing Throttle Position (TP) to Mass Air Flow readings. The element is cooled as air passes over it, and this information is converted into an electronic pulse to be relayed to the on-board computer,. MAF Sensor by Delphi®. 0 volts at 2,500 RPM no load? If not, replace the MAF sensor. This integral part of your computer directed engine mechanism is responsible for noting information on the air density and volume that goes into your engine. 5-6 grams/second at idle and around 11. In other cases, carbon varnish builds up on the sensor from fuel vapors backing up. I cannot get it to read higher than 2. You'll notice if the tailpipes eject black smoke or when the engine runs rough or backfires. 82grams/second maximum. Any fluctuation, or out of specification reading indicates a mass air flow sensor, or related wiring concern. For your problem I would change the fuel filter if not done. Come join the discussion about performance, bulletproofing, modifications, classifieds, troubleshooting, maintenance, and more!. 89v at idle. RepairSmith offers upfront and competitive pricing. Timing was checked twice at dealership. See full list on motor. 07 g/s so was your RPM about 833 or idle?. Maybe someone will have an idea what is happening. That means that our airflow measurement should exceed 80 grams per second or 2. However, before we get to this test there are a lot of inspections to perform. The MAF connector may have up to six wires if. Seeing 150g/m at idle, maxing out at 600g/m around 2000rpm part throttle. Reaches 100% at. There is the full throttle/full load test others use and that is measure the MAF sensor readings at full throttle in 2/3 gear and the engine at maximum rpm. 0 PS XLT CrewCab, SB, FX4, bedliner, bug deflector, Bilsteins, Blue spring kit, new turbo (stock, upgraded Garrett) in December. Ford Mustang Mass Air Flow Sensor. 1998 FORD EXPEDITION. Once again, as a friendly reminder, with the older type of MAF sensor (photo 1), you've got to be very careful with the exposed hot wires. This sensor is located inside the air inlet tube, a line that inputs air into the engine, next to the throttle body. These units came from a 1992 Mustang. The voltages are around 0. The MAF sensor can also be dirty or partially plugged with carbon causing a low reading. com FREE DELIVERY possible on eligible purchases. That means that our airflow measurement should exceed 80 grams per second or 2. Thanks for your input. The ECU uses this information to determine how much fuel to inject. All you need is a multimeter. 12V Power and ground are good. 0L, B2300 2004 B4000 Mercury Mountaineer & Sable Selected Model Replacement XF2F12B579AB MAF 74-50011: Mass Air Flow - Amazon. 8L turbo engine, rated at 180hp, should have a max flow of about 144g/s. Ford Lightning MAF, Infiniti Q45 MAF, GM LT1/LS1/LS2 MAF. This list covers the majority of symptoms I've seen on these types of Ford mass air flow sensors: MAF Codes that light up the check engine light (CEL) on your instrument cluster. 158 X X MAF sensor went above 4. 55grams/second minimum to 1. Any fluctuation, or out of specification reading indicates a mass air flow sensor, or related wiring concern. Actual grams per second, voltage or frequency readings should come from the MAF signal data on the scan tool at specified rpm settings. Before we jump into the diagnostic, let's take a look at how the MAF sensor works so the procedure makes sense to you. P1101 MAF Sensor Circuit Output Voltage low During KOEO Self Test. What's an easy and good way to check the MAF sensor on a Ford Expedition 5. If your car is running better with maf unplugged then a) ur maf was bad b) it was getting bad reading c) u have a leak in ur intake track and or pulling in unmetered air. Fuel PSI holds 40. Go through the PPT again and it says to replace the PCM. So I have the truck back in, replaced the MAF sensor and reset. If the reading is. 0L Mustang computer and mass air flow (MAF) meter in place of the speed-density system in 87-95 F150 and Broncos. This sensor is located inside the air inlet tube, a line that inputs air into the engine, next to the throttle body. Obtain sensor specifications from a reliable source; you can send us an e-mail from the Help Link and we can assist with most information. Fuel Trim code (s). Remove your engine air filter, then locate the MAF sensor somewhere between the filter and the engine. # mpn20227. The MAF should be reading around 4. I recommend using a digital multimeter but an analog multimeter can also be used. The voltages are around 0. I have been trying to find more info on the IAT sensor. One of the more common Ford Focus problems centers around your mass air flow sensor. 5V when snapping the throttle open and closed. Is this new strategy "changing the mission" or original intent of the MAF sensor? 2003 6. This "overlay harness" is from Professional Mass Air Systems. The value you get, 'should' be ~80% of the rated horsepower. A MAF sensor measures the density of the air entering the intake manifold. The diagnostic tests ask you the following: Is the MAF PID value 1. PO102 is low signal from MAF. 8L turbo engine, rated at 180hp, should have a max flow of about 144g/s. So I have the truck back in, replaced the MAF sensor and reset. Take the vehicle on a wide-open throttle test drive and record the MAF sensor signal in grams per second. Oct 28, 2002 · I tested my MAF sensor with a volt/ohm meter according to a test procedure I was given and now I have the numbers and am not really sure what they mean if anyone can decipher these please let me know, I done the test because when I did a code scan I got 66 prob with MAF sensor voltage and 98 computer in failure mode effects management supposidly 98 is a result of the 66 code man this is. MAF Sensor by Delphi®. Here is a video on how you can test your MAF Sensor using a basic $5 Multimeter. By analyzing the volume of air as well as reading the air temperature, your Focus Powertrain Control Module (PCM) can manage the fuel delivery properly. I cleaned the sensor before thich is ese readings and got slight improvements but only slight. #5 · Aug 9, 2012. The specifications will give the. See full list on motor. It is showing output of 1. It measures the volume of air that the engine is taking in. In this case, a test drive was recorded (Figure 3) on a 2. (left side) 141 X HEGO sensor circuit indicates system lean (both sides) 144 X No HEGO sensor switching detected or disconnected (right side) 157 X MAF sensor went below 0. For example, if the MAF sensor specification is 4 to 6 gm/S and your scan tool is reporting. 80 volts at idle. There is the full throttle/full load test others use and that is measure the MAF sensor readings at full throttle in 2/3 gear and the engine at maximum rpm. 15 at idle and the highest I've seen it go is the 1. Values should change rather quickly on acceleration, but values should remain fairly stable at any given RPM. I have been trying to find more info on the IAT sensor. Ford Mustang Mass Air Flow Sensor. The MAF sensors are NOT the same between the various engine as they have different calibration curves. These units came from a 1992 Mustang. # mpn20227. Sometimes, the MAP sensor is used to monitor EGR operation, and doubles as a back up to the MAF sensor. #5 · Aug 9, 2012. We should see a reading of 10,000 ohms or more. P0103: Mass Air Flow (MAF) Circuit High Input. # mpn20227. Low voltage mass air flow sensor (MAF. Second, most MAF sensor-equipped Ford products make use of a PID (Parameter IDentification) called BARO (barometric pressure). That brings up the question of can your car run without the mass air flow sensor? In this article, we will look at what happens when you disconnect the mass airflow sensor. May 31, 2014 · A M ass A ir F low Sensor Element is a hot-wire thermister thats regulated at a specific temperature. Sometimes, the MAP sensor is used to monitor EGR operation, and doubles as a back up to the MAF sensor. The symptoms of a bad mass air flow sensor include low engine power, poor fuel economy, an engine that won't start, a check engine light on the dash and a gas smell from the exhaust fumes. When it comes to MAF sensors, communication with the ECM is key. Here is a video on how you can test your MAF Sensor using a basic $5 Multimeter. from reading other forums non ford specific all reading seem to equal engine. Maybe someone will have an idea what is happening. Absolute Throttle Position-- The absolute throttle position (not the relative or learned) throttle position. Ford Lightning MAF, Infiniti Q45 MAF, GM LT1/LS1/LS2 MAF. A MAF sensor measures the density of the air entering the intake manifold. The transmission computer takes the output speed sensor signal and sends it to the cluster for the speedometer reading. (Or maybe used your own OBD scanner to extract the car faults). 4 volts during the last 80 warm-up cycles. The specifications will give the. The diagnostic tests ask you the following: Is the MAF PID value 1. MAF Sensor by Delphi®. When the mass, and speed, of air increases inside the intake tube, the heated sensor is cooled. It tells the PCM that you're trying to accelerate by measuring the increased flow of air that passes over the sensor wire when you open the throttle. The fact that it is a 4-wire type that has a 12 V supply from the same fuse that the fuel pump gets its supply from makes it intriguing. i checked the live data with the both the old and borrowed sensor. was ~ 14-16. The other sensor is heated to 200° C. This wire is heated by the MAF with. It samples a portion of the air, sending a signal to the ECM to calculate the mass of air entering the intake. This device is a airflow vane meter that measures the volume of incoming air. In my Ford van, the mass air flow sensor sits right behind the air filter, and is easy to reach. It should read 0. 366 lb/min and returning the revs to idle, at 872 rpm the MAF is reading 0. #5 · Aug 9, 2012. 440 lb/min rate. The mass airflow sensor (commonly abbreviated to MAF) is one of the most important engine management sensors. The image is shown below with a digram of the connector and wire colors. This article will cover everything you need to know about the Electrical sensors in your Ford F-150 truck. Alot of muscle car guys gat a larger diameter MAF, and many remove the little screen inside of it, but its. Usually above 0% at idle and less than 100% at full throttle. With the engine idling, the sensor should be putting out a steady 2. With the engine running at idle, use a DVOM to verify that there are at least 10. 2 to 6 is correct MAF reading for warmed up idle, remember it's calculated PCM looks at IAT and MAS (sensor frequency) to calculate the weight of the air in grams per/sec. Perfect solution to keep your air intake system performing the way it was designed to Crafted from the highest grade materials for dependable, long-lasting service. DO not rotate the sensor when it is placed within the testing tube (the place where the MAF takes its readings). The amperage flow through the resistor changes because the electrical resistance of the resistor is responding to the cooling effects of rapidly moving air. It samples a portion of the air, sending a signal to the ECM to calculate the mass of air entering the intake. 65 volts at high idle speed. Now the engine has warmed up to normal and the MAF is reading 0. A faulty MAF sensor can cause your vehicle to run too rich or run too lean. with engine air flow. The diagnostic tests ask you the following: Is the MAF PID value 1. Quick test to tell if Mass Air Flow Sensor is bad or dirty which could be causing your car or truck to run bad or keep cutting off. By analyzing the volume of air as well as reading the air temperature, your Focus Powertrain Control Module (PCM) can manage the fuel delivery properly. At 2397 rpm the MAF is reading 1. A rule of thumb on a MAF's air flow rate at 500 rpm is 1 gram per second per liter of engine displacement. AVG reading is around 1. Repair and retest. The mass air flow sensor has. Jun 14, 2015 · The Powertrain Control Module monitors a vehicle operation rationality check by comparing Throttle Position (TP) to Mass Air Flow readings. The job of the mass air flow sensor. 03/31/2021 10/22/2018. No dealership or service provider, when contacted, has ever been able to provide us with evidence to support this "myth," and in fact, our investigations have revealed that even authorized dealerships are simply speculating and do not have the test equipment necessary to know whether the sensor has failed or why. If the air filter is dirty, the air passage is restricted, or leaking, the reading to the ECM will be out of range. MAF Sensor Readings at Idle and Driving. 413 which is about as low a reading as it has given so far. Inspect the MAF sensor for dirt or corrosion. P0102 MAF Signal Low Input to PCM. Common Symptoms Of A Bad Ford MAF Sensor. was ~ 14-16. These units came from a 1992 Mustang. MAF systems have a relatively poor response to transient. which can give false readings. 0-liter engine. Repair and retest. P1102- MAF sensor issue. The 2005 Ford F-150 was available in 45 different trim packages, between the two-wheel drive and four-wheel drive models. One of the more common Ford Focus problems centers around your mass air flow sensor. There are two sensors in the MAF. The MAF Sensor high voltage output to the ECU may have several causes: The source of the problem is the sensor voltage output is higher than normal or required by the ECU to function with other. MAF or Mass Airflow sensor is a tool to read the airflow intake on engines. With the engine running at idle, use a DVOM to verify that there are at least 10. 55grams/second minimum to 1. In general, a "hot wire" MAF sensor produces an input to the PCM when a low-amperage electrical current is passed through a metal-film resistor suspended in the MAF's air stream. The ECU uses this information to determine how much fuel to inject. It uses a hot wire element to measure the amount of air entering the engine. Seeing 150g/m at idle, maxing out at 600g/m around 2000rpm part throttle. 420 at tickover. Remove your engine air filter, then locate the MAF sensor somewhere between the filter and the engine. The MAF sensor is used to measure the amount of air entering the engine. This article will cover everything you need to know about the Electrical sensors in your Ford F-150 truck. If the air filter is dirty, the air passage is restricted, or leaking, the reading to the ECM will be out of range. Jump to Latest Follow A forum community dedicated to Ford F-series owners and enthusiasts with a Power Stroke diesel engine. Thanks for your input. P0102 – Mass or Volume Air Flow Circuit Low Input. 5-17 grams/second at 2500 RPM. Cardone Reman® Mass Air Flow Sensor. If MAF was bad to run 18% lean you MAF would have to be in the 3. - So for example the 1. The 2005 Ford F-150 was available in 45 different trim packages, between the two-wheel drive and four-wheel drive models. Oct 28, 2002 · I tested my MAF sensor with a volt/ohm meter according to a test procedure I was given and now I have the numbers and am not really sure what they mean if anyone can decipher these please let me know, I done the test because when I did a code scan I got 66 prob with MAF sensor voltage and 98 computer in failure mode effects management supposidly 98 is a result of the 66 code man this is. MAF Sensor malfunction that DOES NOT light up the CHECK ENGINE LIGHT (CEL). 07 g/s so was your RPM about 833 or idle?.