How can I tell if a vibration is coming from the driveshaft or the diff on a car?
New 4" driveshaft installed. All parts in gear swap to 4.30s are brand new.
I've tried indexing the shaft and it made a little difference. Field balanced the shaft with washers on the rear bolts and it helped the most. Still not totally smooth though. It's at higher speeds that I don't drive at most of the time so hard to tell... I'm stumped as the washers on the rear flange made the biggest difference. I think the diff makes noise on decel, but the installers don't.
I've had the guys that did the gear install take it for a drive and they think it's the driveshaft, and the guys that did the driveshaft think it's the flange on the diff when they built it, so I really don't know!?!
New 4" driveshaft installed. All parts in gear swap to 4.30s are brand new.
I've tried indexing the shaft and it made a little difference. Field balanced the shaft with washers on the rear bolts and it helped the most. Still not totally smooth though. It's at higher speeds that I don't drive at most of the time so hard to tell... I'm stumped as the washers on the rear flange made the biggest difference. I think the diff makes noise on decel, but the installers don't.
I've had the guys that did the gear install take it for a drive and they think it's the driveshaft, and the guys that did the driveshaft think it's the flange on the diff when they built it, so I really don't know!?!