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I drove over 800 miles ot get this car, I am keeping it, so my u-joint will get replaced. I'd just like to get the noise traced first.
there was quite a bit of oil on the underside of the car, but I'm not sure it got onto the pinion flange (that's the flange where the driveshaft bolts to the differential, correct?) It was the worst in the drive tunnel when the drain tubes had dumped water onto an oily gearbox creating that greyish sludge we often see when a head-gasket blows. I've been hitting it pretty heavy with engine degreaser then some purple degreaser from Carquest.
Motor and transmission mounts are good, I had to loosen them all to get the dang gearbox out of the car. The transmission one will need to be replaced eventually, but it's still solid now.
The rubber center bearing sounds like a candidate, as well as the U-joints. Come to think of it, the sound may be u-joint related. I don't know all that much about u-joints, but could hitting them with degreaser have mucked them up?
I have not opened the differential or checked it's oil. Like a gearbox, it should be full to the plug, right?
It is also possible that whatever happened, happened while the car was on the tow dolly. The car was towed front first on a u-haul tow dolly. I didn't drive it more than 50 feet once it was home and it was making a lot of gear noise. Could it have damaged that way? and if so, what may have been damaged?
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