I am trying to diagnose my vibration and hum in my XJ. First off its pretty violent.
The vibration really starts up around 60 indicated on the speedo and increases as speed does.
The vibration is not in the steering wheel but felt throughout the whole vehicle, panels shake and floor vibrates.
At certain speeds its waxes and wanes from loud to real loud. Its a very deep bass hum, so much so I can't hear the subwoofer bass.
This is a new jeep to me and has done this since I aquired it.
Heres what I've done so far to troubleshoot:
1: Since it felt like it was coming from the rear I first removed my rear driveshaft and drove at highway speed in 4wd with the front pulling me and BINGO no more vibration.
2: My pinion angle and driveshaft are near straight on with a degree or 2 down for torque. The rear of my transfer case is a double cardan.
3: All my tires are new and balanced size 35x12.50-15. Plus can't be that cause they don't vibrate with the rear shaft gone.
4: Haven't had my driveshaft balanced yet going to do that tomorrow hopefully.
5: Of course the vibration is worse on acceleration/under load but I still hear some while coasting, but none when the rear shaft is gone.
Solutions?
:banghead:
The vibration really starts up around 60 indicated on the speedo and increases as speed does.
The vibration is not in the steering wheel but felt throughout the whole vehicle, panels shake and floor vibrates.
At certain speeds its waxes and wanes from loud to real loud. Its a very deep bass hum, so much so I can't hear the subwoofer bass.
This is a new jeep to me and has done this since I aquired it.
Heres what I've done so far to troubleshoot:
1: Since it felt like it was coming from the rear I first removed my rear driveshaft and drove at highway speed in 4wd with the front pulling me and BINGO no more vibration.
2: My pinion angle and driveshaft are near straight on with a degree or 2 down for torque. The rear of my transfer case is a double cardan.
3: All my tires are new and balanced size 35x12.50-15. Plus can't be that cause they don't vibrate with the rear shaft gone.
4: Haven't had my driveshaft balanced yet going to do that tomorrow hopefully.
5: Of course the vibration is worse on acceleration/under load but I still hear some while coasting, but none when the rear shaft is gone.
Solutions?
:banghead: