Please Help Identify this vibration!!!

vendredi 8 août 2014

Heres all the info i can think of



This started without changing anything on the jeep

It started after a an offroad trip (during the trip i did go through mud)

The jeep has a 4in lift with SYE and CV rear shaft.

There is no play in the rear pinion

It only vibrates when you touch the gas, and then immediately stops after you let off.

Doesnt show till im going 20+ MPH

It increases with speed not RPM

It doesnt happen with the rear tires off the ground and the jeep "going" 20+MPH

It doesnt happen with the rear driveshaft off the jeep

Ive tried lowering the skid plate 1" and it didnt change anything (thought maybe it was from the Driveshaft angle)

Had the rear driveshaft "looked" at by a driveshaft place and they said it didnt feel like there was anything wrong with any of the ujoints

It feels like its coming from the transmission/transfer case when your driving, but cant really tell.

It HUMs pretty "aggressively" while its happening.




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