RPMs "shaking"?


Asked by Jan 06, 2015 at 11:07 PM about the 2002 Pontiac Grand Am GT

Question type: Maintenance & Repair

I have a 2002 Pontiac Grand Am GT. When I drive, the RPMs shake a little, as in they
jump a little and then go back down and can't settle on one spot, and the car tends to
shake with the RPMs. It started out happening just when it was shifting gears, but now
it can happen at any speed. It goes away on its own, but I'm worried about serious
damage. I've taken it to three mechanics, but none can give me answers. Does
anyone know what could be happening?

5 Answers


Is the check engine or service engine soon light flashing while this is going on? If so the engine is misfiring. I'd try a tune up first. HTH. -Jim


The service engine light went on and stayed on when this started happening, but ever since it started getting worse, the light went off and hasn't come back on again. Even when the cruise is set, it does it. And whenever I'm going up a hill, it'll do it.


Visit your local auto parts store and have them scan your computer. Most stores will do it for free. Post the trouble codes and we can help you further. HTH. -Jim


Could also be your transmission "hunting" for the proper gear.


Is the trac-on light on it could be a misfire, possibly the coil pack, also the fuel pressure, fuel filter or fuel pump. Definitely get a code scan (OB-2) check (for free at Auto Zone & Advanced Auto, but not as reliable sumtimes).

Your Answer

Add photo

Related Questions

Grand Am

Looking for a Used Grand Am in your area?

CarGurus has 1,981 nationwide Grand Am listings starting at $1,995.


Search Pontiac Grand Am Questions

Pontiac Grand Am Experts

#1 tenspeed
Reputation 7,080
#2 John Saffrahn
John Saffrahn
Reputation 1,480
#3 Tom Demyan
Tom Demyan
Reputation 1,240
View All

Related Models For Sale

Used Pontiac Grand Prix"
33 Great Deals out of 4,404 listings starting at $1,800
Used Chevrolet Impala"
997 Great Deals out of 35,743 listings starting at $700
Used Pontiac Firebird"
12 Great Deals out of 893 listings starting at $2,900
Used Ford Mustang"
770 Great Deals out of 41,446 listings starting at $900
Used Chevrolet Camaro"
855 Great Deals out of 39,085 listings starting at $2,650
Used Chevrolet Malibu"
1,220 Great Deals out of 72,684 listings starting at $695
Used Pontiac Bonneville"
867 listings starting at $2,950
Used Honda Civic"
1,255 Great Deals out of 58,590 listings starting at $1,295
Used Nissan Altima"
1,569 Great Deals out of 87,988 listings starting at $1,195
Used Honda Accord"
1,393 Great Deals out of 78,668 listings starting at $1,395
Used Jeep Grand Cherokee"
1,261 Great Deals out of 74,259 listings starting at $1,500