SHAKES OR WOBBLES PROBLEM1999 PONTIAC GRAND AM ...
1999 Pontiac Grand Am
October, 2, 2008 AT 8:34 PM
Shakes or Wobbles problem
1999 Pontiac Grand Am 4 cyl Front Wheel Drive Automatic 127000 miles
hi, my 99 grand am has the normal wear and tear on it, but one thing is the SHAKING when I am at a red light, or anywhere sitting in gear. The rpms are 500-550. Sitting at the red light or wherever, if I turn the ac/heat on or just the fans the rpms will do a sudden drop and then level out to about 500. Also if I decide to turn the wheel while im sitting the rpms drop again.. Ive done a tune up. Replace ignition coil housing. Boots. Oil. Air filter. What could be the problem? Please help.
Also. This problem might be related to the one above. Driving the normal speed limit the car rides fine. Get on the interstate and around 55-60 the car shakes REALLY BAD. But if I increase gas it stops shaking. And also while driving at any time. When I let off the gas. The rpms drop all the way down to the idle rpm. Causing the car to slow down instead of just coast. Is this normal.I dont think the rpms are just to drop suddenly like that as soon as I let off the gas.