VIBRATION PROBLEM........any ideas?
Thread Starter
Intermediate
Joined: Aug 2001
Posts: 34
Likes: 0
From: Long Island NY
VIBRATION PROBLEM........any ideas?
While driving my 03 MN6 coupe I get a pulsating vibration in the car between 78-82 mph. it happens only at these speeds and in 5th or 6th gear, the vibration comes in 1 second bursts and happens about every 2-3 seconds. the car has 9500 miles on it and none of the mods Ive done would affect or cause this problem. any input is greatly appreciated
Burning Brakes
Joined: Jun 2002
Posts: 996
Likes: 0
From: Frisco Texas
Re: VIBRATION PROBLEM........any ideas? (JohnnyJet)
I am willing to bet you have a bent rim. The runflats dont give much and when you hit a pothole or bump the rim can bend. I know I bent 2 rims in the first year. I got rid of the runflats and havent bent a rim in 3 years. The wagon wheels were notorious for this but the later model wheels should have been better.
Racer
Joined: Oct 2001
Posts: 304
Likes: 0
From: sometown new york
Re: VIBRATION PROBLEM........any ideas? (JohnnyJet)
you might have 2 wheels slighly out of balance, probably 1 front and 1 rear. when the imbalances get in phase, the vibration is magnified. have you have the tire balance checked?
Racer
Joined: Feb 2002
Posts: 301
Likes: 0
From: El Paso
Re: VIBRATION PROBLEM........any ideas? (JohnnyJet)
Since you can duplicate the problem in either 5th or 6th gear at the SAME speed, your drivetrain is out of the picture buddy; got to be the wheel(s) and/or tire(s), as suggested.
My concern is you shouldn't be able to bend a rim with the tire; I'd try to get your problem warranted first and see what happens, in case you don't have any evidence of damage to your wheels. If you have the least evidence of your wheel contacting a hard surface (pot hole, curb, etc), you're on your own on that one. Same if it turns out to be only a balance job; they'll say it's a road hazard.
My car vibrates at certain high speeds (don't remember exactly), but I picked up the car at 8pm, and took off home very early in the morning. After 700 miles to get home, I knew dealer would reject my re-balance request, so didn't bother to try. I won't re-balance unless it gets worse, mostly because my wheels will look like poopie when I remove the factory weights; why in the world does GM have to use weights that damage $2K wheels? Does paying $1,250 extra for the polished wheels don't include $2 stick-on weights? Geez; I'd have paid $2 extra for them.
JC
My concern is you shouldn't be able to bend a rim with the tire; I'd try to get your problem warranted first and see what happens, in case you don't have any evidence of damage to your wheels. If you have the least evidence of your wheel contacting a hard surface (pot hole, curb, etc), you're on your own on that one. Same if it turns out to be only a balance job; they'll say it's a road hazard.
My car vibrates at certain high speeds (don't remember exactly), but I picked up the car at 8pm, and took off home very early in the morning. After 700 miles to get home, I knew dealer would reject my re-balance request, so didn't bother to try. I won't re-balance unless it gets worse, mostly because my wheels will look like poopie when I remove the factory weights; why in the world does GM have to use weights that damage $2K wheels? Does paying $1,250 extra for the polished wheels don't include $2 stick-on weights? Geez; I'd have paid $2 extra for them.
JC
Thread Starter
Intermediate
Joined: Aug 2001
Posts: 34
Likes: 0
From: Long Island NY
Re: VIBRATION PROBLEM........any ideas? (GRAY_VETTE)
Ok fellas ill give the wheel balace thing a try- I did hit a pothole just before this started but I figured no bent rim, no problem. THANKS Guys!
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