Question about 1996 Pontiac Grand Am

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Engine idle problem.

Engine 2.4L idles fine in gear, when you step on gas to go it dies . Have already changed o2 sensor. Feather gas pedal,will take off.

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  • Allen Swift May 11, 2010

    Does the vehicle have a check engine light on? If so do you know what codes are present. Also just for some info for you,, A TPS sensor can cause this symptom.

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If you have a check engine light take it to you local auto parts store to check if you have any codes. It sounds to me that you have a bad mass airflow sensor. If you never cleared the computer after replacing the O2 sensor do that by removing the positive battery cable for a minute or so. The if your not throwing any codes and you still want to check the MAS you can disconect it and it should put your car into a default mode. The sensor is on the intake near your airfilter.

Posted on Oct 03, 2009

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Check the EGR valve.

Posted on Oct 03, 2009

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Related Questions:

3 Answers

Car idles fine, but sputters, bogs and dies if gas pedal is pressed.


new spark plugs this decade. (a tune up?0
the filter is part of all 60k tuneups. letting it clog wrecks good pumps.
my wild guess, its lack of fuel flow, do to old filter.
or low fuel pressure.
car is identical to a Corolla. so is not unique or rare as some Geo cars are.
the cam belt not changes, invites valve kissing piston tops. BOOM
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the word is bogging, my engine bogs
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tps bad causes short bogs, called hesitations.
The map sensor , is what measure air flow and the ECU matches fuel to this air flow.
my guess, is it does that, but fuel pressure is like 15PSI, bad.

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