Question about 2000 Pontiac Grand Prix

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My grand prix shakes when i go up a hill or start out. i have good tires

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If the shaking is caused by the engine missing (a misfire on 1 or more cylinders), then
check your (a) spark plug wires - pull each and check for continuity/faults/burn marks/etc., (b) spark plugs - pull each & check for fouling/faulty/etc.
Another good check for spark plug wires is to park in a dark area at night (open garage with the
lights out works), run the engine and observe the engine operate in the dark - little lights caused by
faint arcing means that the wires are leaking electricity to the engine block, instead of delivering it
to the spark plugs, like they should.
Your particular car has a Distributorless Ignition System (DIS), consisting of an ICM (Ignition Control
Module) connected to an individual coil pack for each pair of cylinders. You'll need a
HEI (High Energy Ignition) ignition system tester (about $30-$45 any auto parts store) to test
these coil packs, which I have found quite easy to replace (usually a couple of 10mm cap screws).
Since the car shakes only when accelerating or going uphill, I tend not to think that suspension
components of the car are at fault.

Posted on Mar 16, 2011

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Related Questions:

1 Answer

2002 Grand Prix shakes when accelerating over 30 mph


-Possible tires are out of balance.


Good luck

Mai

Feb 05, 2014 | 2002 Pontiac Grand Prix

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I have a 2002 pontiac grand prix gt 3.8l bottom front end shakes only when i accelerate dont know what it is


Hows the rim and the tire?Accelerate when it begins to shake put it in neutral,if the shaking goes away it in you transmission.

Feb 27, 2012 | 2002 Pontiac Grand Prix

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2005 Grand Prix shakes at low speeds, it also does at high speeds but not as bad. Steering wheel does not shake. Front tires have been balanced and the rears have not been.


Sounds like you have a broken belt in one of your rear tires, or a bent wheel. This would feel like the car is rocking a little bit like a boat on small waves. You can check this out by lifting the rear tires off the ground a slowly rotate them while looking at the tread, if you see the tire really wobble or have a bump in one spot that's it.

Mar 09, 2011 | 2005 Pontiac Grand Prix

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The rear tire is on tight but it wobbles and shakes the whole car when i drive it. it has good tires on it.


3 possible answers. 1 the rim is bent 2 . unbalanced tire 3. wheel bearing needs replacement

Jan 03, 2011 | 2004 Pontiac Grand Prix

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1999 Grand Prix: when it goes over 65 mph the front right wheel sha...


Jack up the front right tire and rotate it slowly paying attention to the tread. You will probably notice a small area that is worn out more than the rest of the tire. This is a slipped inner belt and the tire needs to be replaced. If you cannot find a area like that have the balance checked by your local tire shop. Most wobbles like that are a slipped belt but sometimes it is as simple as a weight that came off the wheel. Let me know how it turns out far you and be safe until you can get this fixed.

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Steering problem


when turning you hear the sound? yes it may be a tie rod, cv shaft and or alignment issue. and as for the shaking... check your tire balance.

Dec 13, 2008 | 1997 Pontiac Grand Prix

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