1999 Pontiac Grand Am

Tiny
CHRISTIANCB
  • MEMBER
  • 1999 PONTIAC GRAND AM
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 156,000 MILES
My car shakes all the time. It seems to shake more when I am stopped or have my air conditioner on. I was told it may be my motor mounts but my car hasn't given me any troubles. If nothing is wrong, I don't want to pay to fix it. What is the problem and would it be safe to drive long distances?
Saturday, July 11th, 2009 AT 9:43 PM

3 Replies

Tiny
MMPRINCE4000
  • MECHANIC
  • 8,548 POSTS
You can raise car and use a long pry bar and use it to pry at motor mounts if they have excessive play they would need to be changed.

Is car misfiring or do you have a check engine light?
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Sunday, July 12th, 2009 AT 9:17 AM
Tiny
CHRISTIANCB
  • MEMBER
  • 2 POSTS
No my car isn't misfiring and it had a check engine light go on about a year ago, but then it went off and I haven't had any troubles since.
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Monday, July 13th, 2009 AT 12:52 AM
Tiny
MMPRINCE4000
  • MECHANIC
  • 8,548 POSTS
Have car scanned at some autoparts stores for free. Even though the Check engine light in not on, it will store the code as a history code.

With hood open, have someone rev engine a few times, it engine moves more than 2-3 inches, the motor mounts are probably bad.

It is problematical as to driving the car, in most cases it will not cause severe damage, but can cause the trans case to crack or other problems.
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Monday, July 13th, 2009 AT 7:00 AM

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