Vibration on Highway???
 

ok so my car vibrates on the highway. it happens at around 2500 rpms in 5th gear. only in 5th though every other gear is pretty smooth. but in 5th at like 75 it vibrated a lot when i left off the gas. not too much when i press the gas as when i let go. i was thinkin it could be driveshaft...but wat would cause it? any suggestions????

RE: Vibration on Highway???
 

Driveshaft could be out of balance. Also check your u-joints. Make sure your wheels are balanced, too. You usually only notice that alot at higher speeds.

RE: Vibration on Highway???
 

Yep, probably driveshaft. Make sure the bolts are tight, its probably the u joints. Just reach under there and twist the shaft anf see how loose it is. How far can you turn it side to side, etc.

RE: Vibration on Highway???
 

yeaa thats wat i been hearing. thanks i will try that and keep u guys updated. if the joints are good...how do i know if the driveshaft is balanced correctly???