2001 GTP with acceleration problem
5

Asked by Cris Feb 07, 2010 at 06:35 PM about the 2001 Pontiac Grand Prix GTP

Question type: Maintenance & Repair

i have a 2001 GTP with a cai 3.4 pulley zzp down pipe and zzp front powerlog... im having an issue where when i accelerate moderately to heavily.. the car hesitates and seems to cut the power to the engine. some times it accelerates fine. i was thinking an ignition problem.....any ideas?

3 Answers
955

Adam answered 14 years ago

are you seeing any KR? if so that could be your problem, because with headers intake 3.4 and no tune i was seeing 4-5* of kr until i tuned it.

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10

Archee answered 14 years ago

I have the same problem on a 2000 gt with a 3.8. No idea what a kr is... Not much of a mechanic myself, but i hate bringing it in blind. any ideas?

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955

Adam answered 14 years ago

KR, Knock Retard is the engine pulling timing due to it sensing pre-detonation in your cylinders. for the OP it's more likely since he has a modded engine, but for you if you NA and stock it most likely just needs a tune-up.

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