AUTO Vibration
 

I'm starting to get some drivetrain feedback at 1/2 to WOT, feels vibratory in nature. Very hard to pin down what it is or could be.

My feeling is the 4t45e is 'loose', today after changing my oil up on jacks I tried to inspect the mounts but couldn't see anything obvious. One thing I noticed, when I grabed each front wheel and rotated them while on my back under the car was just how much shake I could put through the tranny as I reefed each wheel back and forth. Obviously the mounts need to act as cushions, but how much is normal is an answer I don't know.

Running Wynns full sythetic ATF, full flush less than 10k ago. Could be mechanical, but obviously hoping not. Even after hours of vigerous logging, my ATF temps have never gone over 68*C (156*F) so heat clearly hasn't cook it yet.

Hard mounts from TTR are being contemplated, but from what i hear it vibrates worse for the initial breakin.

Any ideas would be appreciated.