Question about 2002 Pontiac Grand Prix

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Car stutters when driving like isn't getting enough fuel but gets worse when going up hill... 2002 pontiac grand prix

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Shuttering going up hill usually means fuel filter needs replacement

Posted on Jul 12, 2009

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"I have a 1993 Grand Prix...It chugs when in park & u push on the gas.. Aso when going up a hill it starts to chug & drops down to like20 MPH..It wont go past 20 MPH until I get over the hill, then it...


Sounds like you are getting too miuch fuel and not enough air. Try replacing your spark plugs and wires, then cleaning your throttle body. Replace the air filter too if its been awhile. This will probably fix the problem.

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Could be clog catalytic converter.Tune up fuel filter,coils,air filter.

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Ignition misfire , spark plug's , spark plug wire's !

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I have an 04 Pontiac Grand Prix with 63,000 miles. My problem is pinging when i accelerate. I have changed fuel from 87-89 & now i'm using 93. The pinging is less with the 93 but still there. If i only...


It sounds like your timing is out. Too far BTDC. If you do not know the timing - advance it slightly and try it until it stops pinging. If there is a hill in your area - drive up it with the throttle well opened to se if it pings. Try this before adjusting timing to get a base line to see if it improves with timing adjustments.

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