Today i had replaced the transmission mount and crossmember(the old mount separated) w/ a Energy Suspension mount and UMI crossmember. Everything went in fine, raised the tranny a little bit to get room and swapped in stuff and was good.

So i took it for a drive and now there are vibrations at higher RPMs right before every shift! The fly wheel does have a few teeth chewed up so could it be my flywheel(always been chewed up)? Did i lift the tranny up too far? When i raised tranny a lil, did starter come off flywheel a lil bit? The vibrations had just begun after replacing the member n mount! Is my daily driver, work alot so dont have time to take it to performance shop!

So what is calling these vibrations??? Please help.

 

There has been issues sometimes from installing the ploy mounts and viberations. If you search you should them.

 

i have read where the Energy Suspension mount raises the tranny a bit and could cause the pinion gear to change angle. But why would an poly mount cause vibrations?

 

More extreme angles on the u joints probably. You could try sawpping back to rubber mount and check for vibrations.

 

I will try that, thanks! Do you know of any good brands?

 

Stock replacement from Autozone worked for me.

 

Thanks! That's what is was, was that Energy mount! Switched back to stock rubber(dont like it) mount, and it stopped all vibrations! Thank You!

 

In case other members are searching for similar problems, check below for a comparison of mounts:

https://www.thirdgen.org/forums/tran...ison-pics.html

JamesC