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My mass air flow sensor is missing on my 95 Lumina, runs fine. does this need to be repaired? passed emissions!

Nothing. the mass air flow sensor is no longer on car but I have wires close by the air cleaner that look like they might plug in to one.

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  • Contributor
  • 18 Answers

Yes you do need to replace it to pass emissions

Posted on Nov 21, 2014

Testimonial: "you are correct, I need to get one installed."

  • david zylstra
    david zylstra Nov 21, 2014

    there is no mass air flow sensor on the car and it just passed imissions.

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Posted on Jan 02, 2017

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SOURCE: car will not start when

hi there, when air flow unplugged, ecu goes into limp home mode ,a back up if something dies whilst driving. it sounds as if your used mass air flow sensor is faulty , they are more fragile than they look, one knock and these early fine wire models are gone. i replaced many when i worked at a volvo dealership a few years ago. hope this helps, and good luck.

Posted on Aug 11, 2008

  • 422 Answers

SOURCE: I have a 1999 oldsmobile

fuel pressure regulator on the fuel rail is probably it or the egr valve is stuck open allowing burnt fuel to flood the intake, im leaning towards the fuel pressure regulator because the o2sensor is probably reading rich or if its reading lean then i would choose the egr valve . good luck

Posted on Aug 26, 2008

  • 151 Answers

SOURCE: car runs rough at idle

clean out ur throttle body, just follow the hose from the air filter to the throttle body. Need 2 people to do this. Don't remove the hose completely from the throttle body. Just enuff to be able to spray ur intake cleaner into the throttle body. Do this especially if its worse when the motor is hot, as this would confirm the problem.

Posted on Sep 04, 2008

dustyboner
  • 338 Answers

SOURCE: mass air flow sensor

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Posted on Oct 18, 2008

  • 6982 Answers

SOURCE: Mass Air Flow Sensor - 92 Buick Century

Remove it and clean with some carb cleaner and a Q tip. Be careful with it so you don't do any damage. 9 of 10 times this will get you running again! Since signal from there is variable low voltage, you cant really bypass it!

Posted on Feb 16, 2009

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2004 avalanche. no start, codes po102 and p0442. fuel pressure within specs


With key off unplug the mass air flow sensor and try to start the vehicle. If it starts and runs fine, try cleaning it with mass air sensor cleaner, and plugging it back in. If cleaning doesn't solve the problem it may need replaced.

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What can i do to remedy an emissions problem ive been struggling with for over 3 months


Hi Eric-
The air mass sensor may be either the wrong part or a faulty sensor. I would recommend trying another sensor. In addition please inspect the connector and make sure it is ok.

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What is the reason that it wont pass? High levels of WHAT? What is the year and make and model? Are there any check engine light codes?

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Idles too high at start, then too low after warmup.


Did you have it diagnosed by a scanner of some time? Sounds like you are pulling/replace instead of diagnosing the issue prior to fixing. You probably have a bad IAC sensor, but it could also be the throttle position sensor. Do have a check engine light when it does run? How many miles are on the vehicle. it could be a timing issue. I had a 95 Lumina and it turned out to be a sensor, but mileage does play a key in this issue.

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1 Answer

P0101


Here is the definition of the code.

P0101 GMC Description The Mass Air Flow (MAF) sensor is placed in the stream of intake air. It measures the intake flow rate by measuring a part of the entire intake flow. It consists of a hot film that is supplied with electric current from the Engine Control Module (ECM).

The temperature of the hot film is controlled by the ECM acertain amount. The heat generated by the hot film is reduced as the intake air flows around it. The more air, the greater the heat loss. Therefore, the ECM must supply more electric current to maintain the temperature of the hot film as air flow increases. The ECM detects the air flow by means of this current change.
Faulty mass air flow sensor
- Intake air leaks
- Dirty mass air flow sensor
- Dirty air filter
- Mass air flow sensor harness is open or shorted
- Mass air flow sensor electrical circuit poor connection
Read more: http://engine-codes.com/p0101_gmc.html#ixzz223ibNx6t

Read more: http://engine-codes.com/p0101_gmc.html#ixzz223i9HR3J

Jul 29, 2012 | 2002 GMC Safari

1 Answer

Vehicle inspection, pass primary emissions test but failed high idle test HC ppm 559. standard is 220. man at inspection said was missing at high idle,what can cause that??


First either replace or clean the idle air control valve.You can clean it with a non-chlronated brake cleaner and wire brush.Then take the mass air flow sensor off and do the same but don't use a brush just the cleaner only.

May 12, 2011 | 1999 Chevrolet K1500

1 Answer

95 ford tarus wagon 3.8 won't start. Air Flow Sensor?


u may need to have ur computer reset, u dont say if u have any warning lights on the dash. other fuelling system sensors tie in with the air flow sensors. plug ur diagnostic port in at a garage and see what fault code reads.

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2 Answers

When driving my lincoln 1998 after about 10 miles or so, you can feel it hesitating about to stall.. there was a service engine light pointing to O2 sensor 1 bank II. could this be the cause? since the...


Hello. I can assist you. Generally when a scan is done, the technician will clear out all of the codes and hope that the problem self corrects. I am glad you passed the state emissions test. Now let's get to the bottom of the hesitation. Generally all lincoln and ford cars that hesitate like yours have a problem with the "mass airflow sensor". Most likely you will need to replace it.
The Air Flow Sensor or Mass Airflow Sensor (MAF) is one of the components of an electronic fuel injection system and is found in many of modern vehicles. The Mass Air Flow sensor is usually installed inside the intake air duct between the air filter and the engine. The Mass Air Flow sensor is used to measure the amount of air entering the engine. This measurement is used by the engine computer or ECM to calculate proper amount of fuel injected into the cylinders in order to provide optimum combustion and low emissions.
Problems with Mass Air Flow sensors are common. Bad or contaminated Mass Air Flow sensor can possibly cause a wide range of various vehicle driveability problems such as stalling, especially when the engine is cold, misfiring, poor acceleration, etc.
In addition, a problem with the Mass Air Flow sensor often causes the "check engine" or "service engine soon" light in the vehicle instrument panel to illuminate.
The "check engine" or "service engine soon" light comes on when the engine computer detects some fault in one of the components of the emission control system.

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1 Answer

Hiccuping while excelerating


Sounds like a failing MAP/MAF Sensor....manifold absolute pressure sensor or mass air flow sensor. Do you happen to have a check engine light on?

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