92lxguy

I have a 92 coupe Ihad a vibration at 70 i could feel in the shifter so I replaced the u joints and it took a lot of it out about 3 days later it got really bad and the throw out bearing started making alot of noise so I replaced that it got a little better but at 70 mph and over its still pretty bad at80 the vibration is so bad I can't hardly hold the shifter and the car feels like its going to fall apart what else could it be there is no vibration tell I get to 70 thanks for your help

92lxguy

Come on guys please help me figure this out I just did wheel bearing in the rear end last night its not as bad but its still there

eb2gt

have you checked the following
1. tire balance
2. have you changed brake rotors lately, if you have did you clean mating surface before install.
3. have you checked for a broken belt in one of your tires

Canary94GT

check your harmonic balancer while the car is idling and see if it is wobbling at all. Also check if there is any rubber protruding from the back of it by feeling/looking behind it with the car off. A bad balancer can cause vibration issues and these would be signs it needs to be replaced

Jfsram

Drive the car at 70 in 4rth gear, then in 5th. Did the vibration change?
If so start looking between the clutch and the fan or anything in between. The problem is with engine speed.
If there is no change, check everything from driveshaft to wheels/tires.

Dj_Seph

I have the same problem. Still haven't figured it out. :/

92lxguy

I had rotor turned checked the hb I will look in to tires and it does it in 4th and 5th gear and the vibration stayed the same I'm getting the drive shaft balanced today I will let u knw

92lxguy

Finally got it the driveshaft was out of balance thank you guys for the input

lxman1

My driveshaft was bent causing the same issue. A FRPP aluminum driveshaft cured my problem. Now it's smooth up to 145mph.