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Hesitation problem with my '92 Grand AM

raymo8's Avatar
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04-24-02, 05:45 AM   #1  
Hesitation problem with my '92 Grand AM

1992 Pontiac Grand AM
2.3 liter DOHC "D" type
Automatic Transmission
Multiport fuel injection

Somebody please help me!!!
I've tried everything to fix my car. It hesitates when I start out from a stop or when the engine has to work. It will usually give me a quick burst of power and then the pedal will be dead until 3 seconds later, I'll get another burst, and another until it finally fights through its sputtering/coughing problem. It is very inconsistent. It will only happen about 10% of the time, or sometimes not at all, but when it does, it gets pretty bad.

I have replaced the fuel filter, spark plugs, tested the Internal Ignition Coils, Throttle Position Sensor, Manifold Air Flow Sensor, etc. I'm out of ideas!

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Joe_F's Avatar
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04-24-02, 06:22 AM   #2  
Could be a fuel pressure problem.

Start with the posts and links in my signature file for starters.

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