Hi All
My 1994 s-10 204K miles ex cab 4.3z automatic has a vibration I cant seem to pin down.. Vibe starts at approx 40mph. is a high freq vibe not of the wheel issue type.. I've replaced the U-joints, drive shaft, rear axle, trans output shaft bushing, motor mounts, trans mount, harmonic balancer, fan clutch, front brakes rotors calipers, ball joints, TRE's A frame bushings end links..

Can a failing T/c cause a vibration? Also there is a noise coming from the t/c area under the vehicle sounds a lot like a throwout ot pilot bearing going bad.. It is loudest when you rev the engine in nutral or park. as the rpm drops the noise changes as the speed of the engine drops. sounds like a fan motor with a bad bearing.. the trans shifts fine od works no smell of burnt fluid

Help
Thanks
david

 

could be your flywheel if your tc was bad u would have tranny problems

 

trans is still working now at 210k. there is no flywheel rattle that you normaly get with a broken flywheeel and there is no vibration if I hold it lower gears and keep the tcc from locking up even pushing the 2nd
gear to high rpm.. at 40-45 mph still no vibration untill i put in d(od) and the lockup activates then the vibration is there intil the vehicles slows enough for the tcc to release.. I have the new converter and flywheel will be replacing them this week...we shall see