I have a 91 with a vibration/ humming problem. It will only do it on the freeway at around 65-70+MPH. It all started around the time I replaced the pinion seal and cleaned and regreased the driveshafts. It is hard to say if that was the cause because I don't drive on the freeway much to test it often. It will do the same noise/ vibration consistently no matter what gear I am in including neutral. I have tried removing the front and rear DS to see if there is a difference, no, replaced the front driveshaft anyway, checked the spindle bushings, looked good and had plenty of grease. I noticed the wheel bearings were loose so I repacked them and tightened to 10ftlbs (thanks Landtank). Rotated,Rebalanced tires, then replaced tires and it is still doing the same thing, although improved slightly, with the tires and repacking bearings.
I am going to replace the steering stablizer since it looks like it is rubbing against itself, I doubt if that will matter. Any ideas on what to try next?
I am going to replace the steering stablizer since it looks like it is rubbing against itself, I doubt if that will matter. Any ideas on what to try next?