I was driving yesterday and I heard terrible grinding sounds at all speeds from the rear of the car.

I have a feeling it is the differential, but what is the best way to diagnose it. From what I've read; diff, axles, wheel bearings, transmission, and the drive shaft are all suspectable points.

I'm going to drain the diff later today and see if there are metal chunks in it. Any other advise?

Thanks in advance for the help.



heres a video. You can hear the sound near the end of the video the best. Kinda sounds like liquid and metal swishing around in there.

 

Dosent sound too pleasent. Sorry to say man. It seems too loud and deep to be coming from the axels or wheel bearing. It honestly sounds like something is clunking around. Almost like a bad bearing or something in the trans. Cant say for sure but im going with something in the trans.

 

anyone else?

 

Is this normal???

At 10mph in 1st gear, constant.


idle in 1st gear, speedo said 4mph. driver side doesnt spin and the just wheel twitches



and i didnt hear the sounds like the first video on the jack stands

 

trying to get all the info i can out there. The driver side axle isnt spinning. Still not sure if this is normal for our diff.

 

opinions?

 

I don't know about the sounds, but don't worry about the wheels spinning/not spinning at different speeds with the car up on the jack stands. I freaked out 3 weeks ago after swapping motors and I ran the car up in the air with similar results. Once back on the ground the car was fine. I didn't have any weird transmission, differential, or axels sounds. Good luck.

Bill

 

Thanks for the response. Was the axle/wheel twitching like in my clip?

 

just for closure, the problem was fixed. Happened to be a bad driver side wheel bearing. First time I ever heard one that bad. I heard the normal sqeaking wheel bearing sound 6 months ago, so I tightened the axle nut and it went away. This must have been on the edge of total failure.

 

i heard that just tightening the axle nut will eventually create noises again. not sure though