calthaus
New Member
- Joined
- April 22, 2012
- Messages
- 5
- Reaction score
- 0
- City, State
- Minnesota
- Year, Model & Trim Level
- 2002 XLS 4x4 4.0
I have been searching the forum here and have found several threads similar to this yet many do not continue to post when they find a solution. Maybe they don't...
?
Two years ago I purchased a 02 XLS Auto 4x4 with 145,000 miles from a used car dealership to use for hunting and hauling the dog around. Everyting seemed fine until a few weeks later when I took it down the interstate. It had a terrible noise/vibration/shake (actually kind of bounced and wandered)that started at about 65 mph and did not go away at higher speeds. I assumed it was because of the uneven tires they had on it and just stayed off the interstate and below 65mph until I got some different tires.
Fast forward to now and 5,000 miles later...I just replaced all 4 tires which has dramatically smoothed the ride, however the vibration/noise is still there. The noise is best described as a deep chatter that I can now here actually becomes noticable at about 60 mph, increases to the loudest at 65 and stays that loud up to 80 (have not pushed it beyond as I am afraid something is failing). The rear end does have the whine everyone is so familiar with. This is a much different noise.
After reading others posts, I have tried several things to attempt to narrow down what might be causing it.
Bring it up to 75mph, turn overdrive off, noise stays the same.
Brown Wire Mod to disable power from being applied to front wheels. - no change, noise is the same.
Wheel Bearing check (6 and 12 position) no play. However part of me thinks that driving on those uneven tires for 5,000 miles may have ruined a bearing or two...
Jacked all four wheels off the ground, put it in drive and ran up the speed. There was all sorts of noise from what sounded to be the transfer case and some from the rear end. It was difficult to compare the sound to what is heard on the road as it was much noiser. Almost sounded like the transfer case would not fully engage properly at times. It made clicking noises even at idle speed.
All boot covers are in good shape, Rear drive shaft moves about 1/16 to 1/8" up when I press up where the two shafts connect in the center. Could not find anywhere if that is normal or not. There seems to be a lot of play in driveshafts/tranfercase and differentials.
My next thing to try is to remove the front driveshaft and see if anything changes...
Anyone have any experience with something similar? I really don't want to just start randomly replacing parts.

Two years ago I purchased a 02 XLS Auto 4x4 with 145,000 miles from a used car dealership to use for hunting and hauling the dog around. Everyting seemed fine until a few weeks later when I took it down the interstate. It had a terrible noise/vibration/shake (actually kind of bounced and wandered)that started at about 65 mph and did not go away at higher speeds. I assumed it was because of the uneven tires they had on it and just stayed off the interstate and below 65mph until I got some different tires.
Fast forward to now and 5,000 miles later...I just replaced all 4 tires which has dramatically smoothed the ride, however the vibration/noise is still there. The noise is best described as a deep chatter that I can now here actually becomes noticable at about 60 mph, increases to the loudest at 65 and stays that loud up to 80 (have not pushed it beyond as I am afraid something is failing). The rear end does have the whine everyone is so familiar with. This is a much different noise.
After reading others posts, I have tried several things to attempt to narrow down what might be causing it.
Bring it up to 75mph, turn overdrive off, noise stays the same.
Brown Wire Mod to disable power from being applied to front wheels. - no change, noise is the same.
Wheel Bearing check (6 and 12 position) no play. However part of me thinks that driving on those uneven tires for 5,000 miles may have ruined a bearing or two...
Jacked all four wheels off the ground, put it in drive and ran up the speed. There was all sorts of noise from what sounded to be the transfer case and some from the rear end. It was difficult to compare the sound to what is heard on the road as it was much noiser. Almost sounded like the transfer case would not fully engage properly at times. It made clicking noises even at idle speed.
All boot covers are in good shape, Rear drive shaft moves about 1/16 to 1/8" up when I press up where the two shafts connect in the center. Could not find anywhere if that is normal or not. There seems to be a lot of play in driveshafts/tranfercase and differentials.
My next thing to try is to remove the front driveshaft and see if anything changes...
Anyone have any experience with something similar? I really don't want to just start randomly replacing parts.