Suspension Woes HELP!!
Thread Starter
Drifting
Joined: Jan 2010
Posts: 1,447
Likes: 1
From: Katy TX
Suspension Woes HELP!!
I'm having a rear suspension vibrating issue. While crusing around 70-80mph, the rear of the car begans to shake (similar to wheelhop at the track) and can be felt through the seat but the steering wheel does not vibrate and the front end feels rock solid.
The vibration has been isolated to the rear. I did the 12-6, 9-3 wheel bearing check and that was fine. I lifted car in air and spun wheels, every thing checks out, no wobbling.
It seem as though as soon I hit 70-80mph, the rear wheel travel in an up & down motion more frequent. There is no side to side swaying movement at those speeds, just up and down. Under hard acceleration, I did a 60-120mph punch on the highway and the entire car was rock solid, no vibrating from the rear at all until I left off the gas put the car in neutral and coasting back down to 70mph. (Rear vibrated from 120 to 70mph decel.)
What could possibly be the issue?
The vibration has been isolated to the rear. I did the 12-6, 9-3 wheel bearing check and that was fine. I lifted car in air and spun wheels, every thing checks out, no wobbling.
It seem as though as soon I hit 70-80mph, the rear wheel travel in an up & down motion more frequent. There is no side to side swaying movement at those speeds, just up and down. Under hard acceleration, I did a 60-120mph punch on the highway and the entire car was rock solid, no vibrating from the rear at all until I left off the gas put the car in neutral and coasting back down to 70mph. (Rear vibrated from 120 to 70mph decel.)
What could possibly be the issue?
Le Mans Master
Joined: May 2007
Posts: 5,393
Likes: 17
From: Belleville Mich.
I'd start at the easiest checks & go from there.
Remove the rear wheels & have the tires/wheels checked, for the obvious reasons.
Tires out of round, ply seperation, uneven wear.
Wheels bent, cracked out of balance, lug nut holes out of round.
If there is a metal sound when vibrating, check to be sure differential is tightened down properly to the cradle.
Good luck.
Remove the rear wheels & have the tires/wheels checked, for the obvious reasons.
Tires out of round, ply seperation, uneven wear.
Wheels bent, cracked out of balance, lug nut holes out of round.
If there is a metal sound when vibrating, check to be sure differential is tightened down properly to the cradle.
Good luck.
Last edited by bumble-z; Dec 29, 2011 at 10:40 AM.
Thread Starter
Drifting
Joined: Jan 2010
Posts: 1,447
Likes: 1
From: Katy TX
I'd start at the easiest checks & go from there.
Remove the rear wheels & have the tires/wheels checked, for the obvious reasons.
Tires out of round, ply seperation, uneven wear.
Wheels bent, cracked out of balance, lug nut holes out of round.
If there is a metal sound when vibrating, check to be sure differential is tightened down properly to the cradle.
Good luck.
Remove the rear wheels & have the tires/wheels checked, for the obvious reasons.
Tires out of round, ply seperation, uneven wear.
Wheels bent, cracked out of balance, lug nut holes out of round.
If there is a metal sound when vibrating, check to be sure differential is tightened down properly to the cradle.
Good luck.
Wheels bent, cracked out of balance, lug nut holes out of round. - Check
If there is a metal sound when vibrating, check to be sure differential is tightened down properly to the cradle. - There is no metal sound when it vibrates, there is no sound at all.
