Question about 2000 Chevrolet Impala

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Massairflow shuts car down when diving

Sets codo for mass airflow rest computor car willstart up an run

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Clean the mass air flow . they have a can of spray u can get from te parts store its like 6or 7 dollars but might solve the problem

Posted on Jan 04, 2013


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Posted on Jan 02, 2017

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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

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SOURCE: My 97 Chevy 1500 runs but it will sputter and shut off .

Check the distributor cap/wires/spark plugs. Also might be clogged injectrors (injector cleaner)
Hope that helps
Good Luck

Posted on Mar 18, 2009

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SOURCE: Car bucks and stalls unless mass airflow sensor is

spray out the plenum and throttle body with carb cleaner.

Posted on Jun 29, 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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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

Runs rough when cold and stalls how do I fix it

If it runs ok when its warm you may need a new Idle air control or IAC...what it does is adds fuel when the car is cold to help it run smooth until it warms up...kinda like a choke on a lawn mower or other small equipment. There should be a sensor on the throttle body....with the car running, unplug the sensor...if it runs differently its probably ok...if it runs the same when unplugged...its probably bad.
Another thing to check is the mass airflow sensor....which is usually in the tube that goes to the airbox. If you locate the mass air sensor, either remove the sensor or remove the tube and look down should see a "needle" sticking down into the tube...sometimes in the middle of a screen or honeycomb..thats the mass air a can of Mass Airflow Cleaner at the auto parts store and follow the direction....they are very delicate so be careful.
If I had to bet...I would say its you IAC.

let me know

Jan 14, 2015 | 1996 Nissan Pickup

1 Answer

Can i run my oldsmobile intrigue without the Mass Airflow sensor powered on?

No you cannot run w/o it. Did u try cleaning it. If you need one I may have it contact me at

Nov 06, 2014 | Oldsmobile Intrigue Cars & Trucks

1 Answer

2000 acura 3.5rl shuts off while driving but cranks back up

Could be a few things. The mass airflow sensor could be dirty or faulty. Once you shut off and start again it returns to factory specs and will run for a little while before same thing happens. Could be a bad fuel pump. When they are going bad they overheat and shut down. Once they are cool, the pump works for a while till the same scenario occurs. Do you have a check engine light? If so, what are the codes?

Oct 06, 2014 | 2000 Acura 3.5RL

1 Answer

1990 mustang shuts off with mass airflow sensor plugged in

try another mass airflow sensor. I know they're expensive to buy....but if you could find another good used one to try....

good luck

Jan 09, 2013 | 1990 Ford Mustang

1 Answer

My 1991 240DL volvo has a hard start, and while idling, goes up and down, then eventually stalls out. The air flow sensor/air mass meter? was unhooked, and the car idled smoothly. Is it true that the car...

When you unplug the mass airflow sensor, the car goes into "limp home" mode in which it runs full rich. Generally speaking, if a car runs better with the mass airflow sensor unplugged than with it plugged in, the mass airflow sensor has failed.
However, the drifting idle tends to make me want to look for vacuum leaks and check the rear temperature sensor on the driver side of the head. I suspect that running over-rich is compensating for the vacuum leak so the car keeps running.
If you have a propane torch or a can of diesel starting ether, spray it around the intake manifold while the car is idling and see if the engine speeds up. If so, then you have found a vacuum leak.
If it were mine, I would buy a new intake manifold gasket and replace it as a routine maintenance item. It is not expensive or difficult to replace except that if you are like me, you WILL drop at least one nut, and there are several great hiding places on that side of the engine where the nuts go to hide when you drop them. You will need a magnet to recover them. You don't need to pull the manifold clear off, you just have to pull it clear of the bolts so you can slip in a new gasket. You can leave the throttle cables and most of the other connections hooked up
If you know how to use an ohm meter, you might consider getting a manual for this car and looking up the appropriate resistance/temperature values and checking that rear temperature sensor.
While you are replacing that intake manifold gasket, check all the vacuum ports to make sure they are clear, and check all the vacuum hoses to make sure they are intact. Also check the tubes between the mass airflow sensor and the throttle body for cracks. While you have those air tubes off, clean the throttle body and the idle air control valve with some carb cleaner. Spray a little carb cleaner through the mass airflow sensor as well. Actually, there is a special spray for cleaning mass airflow sensors that is more gentle, but I have used carb cleaner on them many times with no apparent ill effects.
If it turns out that the mass airflow sensor has failed, that will run some $$, but having a fresh intake manifold gasket and clean throttle body and no vacuum leaks will be worth your time and money and make the car run better when you are done.

Jun 07, 2011 | Volvo 240 Cars & Trucks

1 Answer

1996 t bird 4.6l idles up and down

If it idles up and down real high, its the throttle body sensor. If it's a low up and down idle and runs rough it is mass air flow meter. If you unplug the mass airflow meter and it will just low idle (no up & down) then the mass air flow meter is bad.

Feb 11, 2011 | 1996 Ford Thunderbird LX

2 Answers

Codes171 174

Do you mean codes P0171 and P0174? The 4.6L and 5.4L engines have problems with the rubber boot that connects the PCV tube to the back of the air plenum assembly. The rubber boot deteriorates and gets hols in it which causes lean O2 Sensor codes on both banks. The PCV Valves themselves also fail, causing the same codes. (These are the most common causes) The second most common cause is a malfunctioning MassAirflow Sensor (MAF). Severalother things can cause these two codes including any vacuum leak that is on the engine side of the mass airflow sensor, including holes in the intake "snorkel", intake manifold leaks, or any vacuum suply hoses leaking, including the brake booster hose or even a leaking brake booster. Low fuel pressure, caused by any one of several reasons, can also cause these 2 codes. Clogged injectors can also cause these codes, but are not likely to set both of these codes at once. (although it is possible) The least likely cause (although possible) is that both upstream O2 sensors have failed.

Jan 16, 2011 | 2004 Ford F150

1 Answer

My car won't stay running

If it has a mass airflow sensor, that could very well be the problem. Also check the MAP sensor or throttle position sensor. Hope it helps!

May 21, 2010 | Pontiac Cars & Trucks

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