Hey guys, I have been experiencing a strange clanking sound (metal hitting metal) when I accelerate in first and second between 3000-5000rpm. It is just a single clank and almost sounds/feels as if the transmission is moving (broken mount?). Has anyone else experienced this? Should I be worried about the state of my mounts or the interior of the transmission?

 

What happened when you replaced it?

EVERYBODY that has one of these cars has experienced it. Hell in my car, when it was still STOCK, I could go to the parts store, buy a new STOCK mount, put it in, and the VERY FIRST TIME I BACKED DOWN THE DRIVEWAY, break it again. (L69 T-5 3.73 car, no I didn't have the crappy Goodyear tires that came on it, for years I had Pirelli, therefore about twice the traction as those other POSs) I quit buying stock ones because they were SO crappy. People with 6-cyls break em, it's THAT eeeeeeeeeeeeeezzzzzzzzzzzzzzy.

No, absolutely of course not. You should already know. No worries necessary. You should now be in perfectly calm resolution and confidence without the slightest taint of worry. You already know, it's BROKE. Change it out.

 

Either tranny mount or torque arm mount. My guess is torque arm mount because I think the noise would be louder and more violent if the tranny mount let loose. Some have described is as the sound of a bowling ball slamming against the trans tunnel.

Obviously you should check both...

 

Put the car up on stands and checked both the torque arm and the transmission mounts. The torque arm mount seemed fine, and the transmission mount looked ok too (Some rubber was cracking on the casing of the mount but the metal inside of the wrapping was fine). Maybe just my exhaust hitting something while accelerating (very quite sound, not a thud but a clank).

 

Have you (ever) changed the trans mount? If the answer is no, or not lately, then you need to replace the mount.

They rip in half, one part stays bolted to the trans, the other bolted to the crossmember, gravity will hold the two parts together right up until the shift, then the torque arm pushes the trans into the bottom of the car.

Replace. Your. Trans mount.

 

Won't hurt to try it, I'll order one and see how that goes. Thanks for your help, I didn't know it was such a common problem.

 

My '89 IROC Z was making the sound OP reports. I replaced the broke in two , trans mount and it fixed the problem.

 

Do you recall the specific mount you purchased? I have read some old forums and have discovered that finding the correct height/size mount is important.

 

Just the stock, aftermarket replacement, from O'Reiley Auto parts.

 

Don't get the Anchor brand. Get one from NAPA, or else go with polyurethane...

 

Awesome, thanks everyone.