Question about 2002 Chevrolet Impala

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What is a "Mass-Airflow Sensor"?

Has something to do with the "check engine" light coming on...

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

leetamara
  • 702 Answers

SOURCE: having problems with my 96 chevy tahoe mass air flow

The MAF (Mass Air Flow) sensor is a very common problem with these along with the pickups. This isn't what you would call an inexpensive part. Definitely do some shopping before you buy one.

Posted on Nov 10, 2008

emissionwiz
  • 75235 Answers

SOURCE: Mass Airflow Sensor 2005 Chevy Malibu. 2.2 ltr.4 cyl.

The MAF is in the flex hose that delivers air to the engine, it has a 5 or 6 wire connector going to it.

Posted on Nov 19, 2008

  • 1214 Answers

SOURCE: 2003 Tahoe Running rough, Idle irratic, Ck engine

Yes, replace the MAF, then check if the lean condition goes away. It should.

MAF's are sensitive to cleaning. Sometimes it works, other times it doesn't.

Posted on Dec 11, 2009

  • 67 Answers

SOURCE: service engine light on 2001 blazer

with the p0101 make sure you have a clean air filter. it can be bad spark plugs and or wires, or a leak in the air intake system

Posted on Mar 12, 2010

SOURCE: I unplugged the Mass Airflow

Most likely if there is no mass air sensor you actually unplugged the inlet air temperature sensor IAT. This is a little bead like thermistor that sits in the ducted air stream to measure incoming air temperature. Without an air mass sensor your engine will have instead a manifold absolute (air) pressure MAP sensor. This measures the absolute air pressure (the difference between the atmospheric air pressure outside and the drop in pressure inside) in the inlet manifold. The drop in pressure in conjunction with air temperature allows the engine control unit to calculate the amount of air in the engine to which it adds the correct amount of fuel per each injection cycle. The loss of the IAT signal is not critical as the ECU will assume a default value. However when extreme low temperatures are encountered the absence of the IAT may be become noticeable as the charge of air entering the engine will be denser and as a consequence the fuel mix will be much leaner; maybe to lean to start up.

Posted on Sep 08, 2010

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1997 tacoma check engine light comes on,but it idels good,no melfuncion.


You would have somebody with a scan tool hook it up to your car and retrieve the codes from the computer. It could be something as minor as a worn gas cap. Or it could be something worse like an o2 sensor, mass airflow sensor,etc. If let go too long it could damage other parts.

Feb 13, 2017 | Toyota Tacoma Cars & Trucks

1 Answer

I have a Buick lasabre 3800 and on my mass airflow sensor one wire is clean and one lookes burnt . Would that cause my car to act up?


Yes, a dirty or bad mass airflow sensor can cause a car to run badly. I had a 1999 Mazda Protege that had this problem. You can get a can of mass airflow sensor cleaner from an auto parts store. Be careful to hold the can a few inches away from the wires so as not to break anything. Mass Airflow Sensors are fragile. Let it dry before putting it back in the car. If your car has the check engine light on, they can check the code for your as well. You could go to Autozone, Advanced Auto Parts, Oreilly's, etc. CRC Mass Air Flow MAF Sensor Cleaner Instructional Video

Aug 11, 2016 | Buick Cars & Trucks

1 Answer

Symptoms of faulty air flow sensor


  • How to Detect and Clean a Faulty Mass Airflow Sensor ... www.carsdirect.com > Car Repair > Engine Repair 2012-02-24 · Symptoms of a Faulty Mass Air Flow Sensor ... Here are some of the most common symptoms of a faulty mass airflow sensor: ... CARSDIRECT IS AN ...
  • Mass Airflow Sensor: An Easy Fix for Big Problems from a ... www.airtexproducts.com/news-blog-mass-airflow-sensor-an-easy-fix... news,blog,mass,airflow,sensor,an,easy,fix,for,big,problems,from,a,little,instrument. ... Mass Airflow Sensor: ... What Are the Symptoms of a Faulty Mass Air Flow Sensor?
  • Signs & Symptoms of a Faulty Mass Air Flow Sensor www.geeksofcars.com/list_5794328_signs-mass-air-flow-sensor.html Signs & Symptoms of a Faulty Mass Air Flow Sensor. The Mass Air Flow Sensor is a device used on many fuel injected automobile engines to measure the density of air ...
  • See Bad Mass Airflow Sensor Symptoms on YouFixCars.com www.youfixcars.com/mass-airflow-sensor.html Video embedded · Mass airflow sensor problems can turn on the check engine light. They can also cause a variety of other symptoms before the ... How to clean mass air flow sensor ...
  • How to ' Tell If You Really Need a Mass Air Flow Sensor ... www.youtube.com/watch?v=aDlHCjgYf8s
    • BY AUTO REPAIR QUESTIONS ANSWERED BY WESLEY HARRISON
    • 4 MIN
    2011-08-22 · Video embedded · ... How To Clean a Mass Air Flow Meter and Tell if you really need ... Mass Air Flow Sensor ' Auto Repair ' Wesley Harrison ... Sensor Symptoms ...

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    Jul 09, 2016 | Cars & Trucks

    1 Answer

    What else could cause the check engine code to read mass airflow sensor?


    OBD Codes have nothing to do with telling you the
    problem or the need to replace parts

    Codes are used to diagnose the system with the fault,
    that set the codes

    Have to component test the entire vehicle system, to find a
    problem

    You were only told about the code

    No one can tell you what the problems may be, until the vehicle
    is properly tested to even find a problem

    Sep 06, 2014 | Cars & Trucks

    1 Answer

    Code 157


    Error code 157 on your vehicle indicates a problem with your mass airflow sensor. The mass airflow sensor gives a reading based on the air intake and output within the engine compartment. A properly functioning sensor will contribute to better fuel economy. In some instances, you may be able to clean your mass airflow sensor to clear the error code, but the error will most likely return in a short time. Fortunately, replacing the mass airflow sensor is a reasonably simple repair.

    Read more: How to Correct Engine Code 157 ' eHow.com http://www.ehow.com/how_7982654_correct-engine-code-157.html#ixzz2IH5Ki64X

    Jan 17, 2013 | Ford Windstar Cars & Trucks

    1 Answer

    Engine cut out while driving, won't start.


    Lets start at the beginning.
    If you have a V6 engine you have two cam sensors. And the problem could be the cam sensor(s) is not in sync with the crank sensor due to a problem with the sensor or the timing belt.
    Code 340 is for bank one sensor one. You could have as many as 4 sensors depending on which engine you have.
    The mass airflow meter code could keep the engine from starting.
    The cruise control problem could be related to the cam-crank sensor issue or something else.
    You should only have one crank sensor and it is usually near the crank pulley in the front of the engine.

    Sep 29, 2012 | 2006 Dodge Stratus

    1 Answer

    When I get to 60 mph or when I first crank up my 2000 Buick lasbre stalls.


    First check fuel pressure to specification. My suggestion is a faulty mass airflow sensor. At idle lightly tap on mass airflow sensor with screwdriver handle and listen for erratic change in engine rpm. Wiggle airflow sensor connector and listen for any changes also. Replace sensor if rpm changes.

    Mar 25, 2012 | 2000 Buick LeSabre

    2 Answers

    The check engine light comes on and it dies on occasion. It is intermittent. Had it scanned and was told the only fault was mass air flow sensor. Cleaned the mass air flow sensor, replaced fuel filter and...


    Anytime you make a change to any part of the emissions system, its best to disconnect the
    battery for a few minutes. If you don't, the computer retains the fault code and it will usually keep
    coming back. When all power is lost to the computer, it will do a complete scan when reconnected
    and engine started. Try disconnecting the battery for a few minutes then reconnect and see what happens.

    Mar 05, 2011 | 1992 Buick Century

    1 Answer

    I had the check engine light come up. It was the Mass airflow sensor. I changed it with a new one from Advanced Auto. They reset the computer and a day later the engine light came back on. Same code Mass...


    it can make a difference with the units.
    i have just changed the same sensor on a skoda diesel.
    there were 2 units listed as being correct for the engine. one works, one doesn't.
    always make sure you have the correct unit for the right engine.

    Feb 22, 2011 | Volkswagen Jetta Cars & Trucks

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