ST205 Rear clunk on take off and low gear downshifts?, Had it checked out, Can't figure it out. Options

[salv]

While driving one day after downshifting from 2nd to 3rd I heard a loud clunk in the back end of my car. Whenever I drive off from a stop I would hear the same clunk. If I'm in first and I let off the gas I can hear the loud clunk.

I checked online and many Celica owners have said its the rear diff mounts.

I took it to a shop today to have a look at it and they couldn't figure out where it was making the clunking noise from. We both thought it was from the rear diff mounts but they seem to be in good shape with no cracks. They suspected it was my drive shaft because it had play when turned left and right but we agreed that the noise couldn't come from that; (Plus I would have more then just that problem if that were the case).

The noise has been driving me nuts! Anyone have similar problems and possible ideas of where its coming from?

Symptoms are:

-Slight clunk noise when driving off from a stop
-Slight clunk when put in reverse
-BIG clunk when downshifting under high RPM load ( Going from 3rd to 2nd gear)

Cheers,

Sal

[kurt95gt]

idk if this will help but im my buddy old truck (2001) a shim came loose in the diff housing an was letting his diff move loose from the input shaft an it made a clunking sound be under allthe same conditions
like I said this might not be the same issue but its an idea

[bloodMoney]

I would replace the diff mount with a solid one anyway.

Everything you've described screams diff mount to me. There may be some play in the mount from something you can't until you pull it out.

I would pick up one of these.

[Neon90424]

that noise sir is the diff cushion, have it myself


feels like getting kicked in the balls every hard shift

This post has been edited by Neon90424: Jan 13, 2012 - 8:40 AM

[salv]

Can someone link me to the diff mount please?

[mandrek]

could very well not be the mount, but the diff it self.. my bro's EVO does that same thing under same conditioins.. and he said it is a known issue and just needs better diff fluid..

[playr158]

Differential is going out or tge bushing is bad. Replace bushing first

[Nial]

It'll be your diff mount. Dont buy a solid one unless its a track car...not good on a road car.

St205 & st185 REAR DIFF MOUNT CUSHION 52291-20010

[cax_11]

Had all the same issues, turned out to be the diff mount, inspect the rubber carefully, as mine broke but would go back in place and make the split hard to see. There are also the cradle mounts over the front of the diff inspect those as well