Nyzze00Z28

iTrader: (1)

It starts when I am driving in a parking lot in 1st and when I let off the throttle it goes clunk. If I mash the gas it wont do it. I looked under the car and nothing broken and nothing loose. What the heck could it be?

It is worse in 1st and it basicaly goes away as I go up in gears. It has to do with twising of the housing or something like that. could it be the bad axle bearing thing?

Thanks

LS1Formulation

iTrader: (13)

Check your trans mount, your torque arm mount, and your LCAs. My stock LCAs are clunking similar to what you've described, but between shifts (M6 car).

Nyzze00Z28

iTrader: (1)

I am an M6 too but it doesn't do it between shifts only on coast in low gears.
I check the TA and mount and all bolts were there and tight. I looked to see if the Ta was broken but didn't see any cracks. LCAs looked ok, the ruber bushings sure move alot because of the crappy rubber.

Keep it comming I need to figure this out.

M3EATER

You may have play in the ring & pinion. Grab the driveshaft and try to twist it back and forth (with the park brake on, trans in neutral). Does the pinion yoke (and the shaft) twist a bit, back and forth? If it's more than a very miniscule amount, it will clunk as you've described.

SSinisterTX

iTrader: (2)

It could be your posi going out, try driving around in a compelete circle to see if it clunks in a empty parling lot. Or do a small burn out to see if both tire print on the pavement.

Keysplayr

My 2000 Z has done this since it was new. It's like putting a small cardboard box in a clothes dryer sound, though probably not as loud. I think it's just the backlash of the rear because you are neither applying power nor using the engine to slow down, but kind of in limbo. So I think the back and front end of the rearends gear teeth are just exhibiting some play. I think this is normal.

MeentSS02

iTrader: (11)

Mine does the same thing, and it is the play between the ring and pinion that causes it on mine. On a lift, I can reproduce the sound exactly by just twisting the driveshaft with my hand.