2001 XJ, 4.0L auto, bone stock, 200K miles
Bought this XJ for my son to drive as his first vehicle. Really solid and drives great. It has one nagging issue I can't figure out - an intermittent vibration in the rear end.
It usually occurs around 45 - 50 mph. Its an audible vibration, like you have a huge sub-woofer in the back of the XJ. I mean everything rattles including the mirror. It usually happens when your accelerating at a moderate rate, but when it happens if I maintain speed it will keep doing it until I have to speed up or slow down. OR it can start and I keep accelerating and drive through it. It definitely acts like I'm hitting some kind of natural frequency of some part of the rear drive-line.
I've been under it looking for an issue and haven't found anything. It has new shocks, all the u-joints look good, and have no play. All the other bolts are tight. The only other thing I can think to check is tire balance.
I'm hoping someone may have had a similar issue and might give me some guidance.
thanks!
Clay
Bought this XJ for my son to drive as his first vehicle. Really solid and drives great. It has one nagging issue I can't figure out - an intermittent vibration in the rear end.
It usually occurs around 45 - 50 mph. Its an audible vibration, like you have a huge sub-woofer in the back of the XJ. I mean everything rattles including the mirror. It usually happens when your accelerating at a moderate rate, but when it happens if I maintain speed it will keep doing it until I have to speed up or slow down. OR it can start and I keep accelerating and drive through it. It definitely acts like I'm hitting some kind of natural frequency of some part of the rear drive-line.
I've been under it looking for an issue and haven't found anything. It has new shocks, all the u-joints look good, and have no play. All the other bolts are tight. The only other thing I can think to check is tire balance.
I'm hoping someone may have had a similar issue and might give me some guidance.
thanks!
Clay