I have an 88 GL-10 turbo w/ 4EAT. I've been noticing a bad vibration at exactly 10 MPH, and faster than that it's gone. Also when it warms up it's gone. I feel it in the whole car, and not so much the steering wheel. It was just barely there but in the span of a week it's got really bad. It does it in neutral too.

 

So far I've removed a rear axle, swapped the tires around with the spare, and lifted the front of the car and ran it. I can't figure it out. Next I'm gonna take the driveshaft out.

 

Any ideas?

U joint in the driveshaft isn't uncommon.

yea i have a 88 turbo wagon with the 4eat as well priviouse owner drove it till the drive shaft broke and tookout the trany...

"It does it in neutral too."

only when its movin?

Wow I've been super busy lately. Anyway finally removed the driveshaft and yep - the front joint is locked up. I got three new ones ready to go in, I'm going to give it a go. The driveshaft shop said that the replacement ones could be sketchy and they wanted $350 to weld new yokes on.

 

Thanks for the advice everyone.