1999 Pontiac Grand Am

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?

3 Replies

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

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

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