Vibration, Shaking Need Advice (Long)
05-21-2009, 11:51 AM
#1
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Thread Starter
Vibration, Shaking Need Advice (Long)
79 L82
Had a minor vibration that you can feel mostly when the car is under power going up a hill 40-60 mph. It shakes the entire car and seems to be coming from the rear. You can feel it in the steering wheel. Not as bad coasting down a hill at the same speeds.
1. Changed the u-Joints in the drive shaft. No change.
2. Rebalanced and rotated the tires. Very minor improvement.
3. New ball joints and tie rod ends. Front end alignment.
4. New Rear fiberglass Spring and Shocks. Nothing
5. New Rear Half Shafts, Rear Strut Rod Bushings. It's shaking worse than before we changes the half shafts.
6. Today is a four wheel alignment. I'm can't believe that the caster and camber on the rear would cause this, but it needs to be checked.
Any and all opinions welcomed.
Had a minor vibration that you can feel mostly when the car is under power going up a hill 40-60 mph. It shakes the entire car and seems to be coming from the rear. You can feel it in the steering wheel. Not as bad coasting down a hill at the same speeds.
1. Changed the u-Joints in the drive shaft. No change.
2. Rebalanced and rotated the tires. Very minor improvement.
3. New ball joints and tie rod ends. Front end alignment.
4. New Rear fiberglass Spring and Shocks. Nothing
5. New Rear Half Shafts, Rear Strut Rod Bushings. It's shaking worse than before we changes the half shafts.
6. Today is a four wheel alignment. I'm can't believe that the caster and camber on the rear would cause this, but it needs to be checked.
Any and all opinions welcomed.
05-21-2009, 01:13 PM
#2
Drifting
Member Since: Feb 2004
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When you changed the 1/2 shafts, was there alot of end play in the axle stubs?? Sounds like it is drivetrain related, not balance. If it were a balance issue, it would do it under load or while coasting.
Good Luck, and keep us posted!!!
Good Luck, and keep us posted!!!
05-21-2009, 01:41 PM
#3
Le Mans Master
t-arm bushings
05-21-2009, 03:54 PM
#4
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Thread Starter
Checked the rear tow and it's out by over an inch and can't be adjusted back because the TA bushings are shot.
There also is some play in the Axle Stubs. Looks like we have some work to do. Pull the TAs and the rear end.
Thanks for your replies. They were spot on.
05-21-2009, 04:20 PM
#5
Le Mans Master
good luck in pulling the t-arms.... they are a PITA...i would suggest soaking them down with some pb-blaster for a few days prior to pulling the bolt out
05-21-2009, 04:52 PM
#7
Le Mans Master
make sure to have a 'dammit tool' ...something soft and wont break anything when you throw it.....
05-25-2009, 10:00 AM
#9
Race Director
Good luck!
