When i back up i get a vibration. I have replaced the engine mounts and tranny mount. do you think it is bad rear ujoints. I checked them and they dont feel loose. what could it be? Ring and pinion?

 

The vibration doesnt do it at an idle. It only does it when backing up. It will do it if i give a small amount of gas but will stop if back up faster. I have searched but there doesnt seam to be anything that pertains to just this. I will try new u-joints and rear end oil change this weekend and see if that helps

 

Any Body???

 

My girlfriends jeep cherokee just got work done to fix this problem as well but no luck. She had the fuel injectors replaced, the throttle position sensor adjusted, and both her rear wheel bearings replaced. Haven’t checked her trans or motor mounts so thats on my to do list as well.

 

Checking the trans and engine mounts sounds like a good idea

Vibration as in shudder or rough running?

 

I am not sure how to tell the difference unfortunately. I would say shudder but I do notice that it will give a smell like gas and the speedometer will tick up even though the car is not moving.