Clunking from Rear

[llll1l1ll]

Often when I disengage the clutch - particularly in first or second gear - without a bit of throttle to even it out, I hear a clunk from the back. It's almost as if the driveshaft is going back and forth.

The reason I added the throttle bit in there is that if I keep the engine revved up a little, it won't clunk versus if I let off the throttle completely then disengage the clutch. The second one causes the most "clunkage."

My guesses are a bad guibo, a bad differential mount, or just low fluid in the differential.

I know the differential is supposed to have a little play, but I think something is awry.

Best,

Pete

[jlevie]

Could be guibo, CSB, drive shaft, diff mount, half shaft, RTAB's, or subframe bushings. An inspection should reveal candidates.

[llll1l1ll]

Yeah, actually, like a turd, I posted this thread then did some searching.

It didn't do it this morning, though. It's also not as severe as some others have described.

It actually does it when I shift really sloppily. I'll keep my eye on it though, as I suspect it's the driveshaft.

[ngcreese]

Hmmm... I get a "clunk" from my rear end when i put the car in reverse and let out the clutch, I'll also get a "clunk" with I go back into 1st from reverse. Also, if I downshift a gear and let out the clutch (engine breaking), or am really sloppy in my shifting, I'll get that "clunk" sound.

My diff, also makes constant metal-on-metal noise, above 40mph.

I've installed a new driveshaft, guibo, CV axles and front & rear wheel bearings. Though all those things needed to be replaced anyway (220K+ miles on her), none of them directly changed the nature of what I am hearing.

I've narrowed the "clunk" and constant metal rubbing (not sharp scraping, but dull metallic rubbering ), to my differential needing a rebuild or replacing, due to worn out pinion and carrier bearings.

I think I might get a new LSD unit from Diffsonline.com, eventually.