So I've been having a vibration between 1500 and 2000 rpm, more noticeable closer to 2000 rpm. Seems like be even more noticeable when the tranny is about to shift into the next gear. Its not in the steering wheel, not on my shifter, seems like its coming from deep down inside the car.
I've searched and it looks like it can be a variety of things from Tranny mounts, Engine mounts, unbalanced wheels, maybe bushings, etc.

I want to fix this asap. Can someone please tell me what it is? From what I've read I'm gonna say transmission mount, but just want to be 100% sure..

Thanks guys!

 

Going to be really hard to comment on this one. You seem to be very smart and mechanically inclined individual. My guess would be just as good as yours. I suppose you can check all the bushings yourself and whatever you can to narrow it down and save $$$ before taking the car to the shop.

Good luck

 

^ I know my dieing aristo tranny vibrates my car especially before it shifts, just an idea. Or maybe driveshaft balancing. Did this just randomly start happening?

 

No, been happening for a little while now. Very slowly getting worse. It's not a huge vibration, but because I drive the car everyday I notice it..

 

WHile you're looking at everything else, you might want to check the flex coupling in driveshaft too.

 

Recently have your Torque Converter removed and re-installed?

If the people doing it used mismatched bolt lengths to re-attach the TC to your flywheel, you'll get a rotational vibration that WILL NEVER go away until you remove and reinstall the TC again with all correct length (matched weight) bolts.

I learn this the very very hard way after much searching and MUCH *****ing at the people who did the work.

 

^ Nope. Havent touched that..

 

Hmmm I hate these kind of problems that linger, worse comes to worse you can just wait till whatever it is breaks or gets really bad so you can identify it

 

how bad is the vibration at Idel ??

 

I have none at idle. Just when I drive. It comes from the drive shaft. I'm thinking mine is the center drive shaft bearing. I won't know for sure till I move the drive shaft with my hands.

 

Ya no vibration for me at idle either. While really trying to pin-point it over the past few days I've noticed thats its mostly right at 2k rpm (60 mph)..