| Author | Message | ||
     Joe Brittain (Joeandtiffany) New Member Username: Joeandtiffany Post Number: 1 Registered: 01-2004 |
OK so here goes... I have a bone stock 1999 Series I Disco w/ 66,000 miles. It has developed a strange vibration. While under power -no problems. Letting up on the throttle at any speed over 50 and then re-applying throttle will produce a vibration bad enough for your passenger to start dialing on their cell phone. If you let up on the throttle and VERY easily get back on it the transmission/driveline will 'catch up' with no vibration or very little. You can also down shift out of OD and catch it up that way. You feel it in the seat. I did my home work on the board and removed the front driveshaft and took it for a drive. Still vibrated, but only 50% as bad as when both driveshafts were installed. So I removed the rear driveshaft and I noticed 80% of the vibration. My question is what else is there? I am really worried about the Transfer case...Should I be? Vibrated the same way before and after new tires -less than 600 miles on Michelins. TIA ol' wise ones! J- | ||
| Matt Anderson (Disco01) Member Username: Disco01 Post Number: 112 Registered: 10-2003 |
How do the U-Joints look? How about the rotoflex coupler? | ||
| Chris Browne (Chris_browne) Senior Member Username: Chris_browne Post Number: 538 Registered: 02-2003 |
Matts on the right course I think...also check for loose bolts on the ujs. Also look at recent work you have performed to the truck and recheck tighness of all bolts | ||
| Matt Anderson (Disco01) Member Username: Disco01 Post Number: 113 Registered: 10-2003 |
Do you have a lift? Did this develop gradually or all of the sudden? Has it gotten any worse over time? | ||
| Kevin Fedyk (Kovert) Member Username: Kovert Post Number: 91 Registered: 05-2003 |
NO!!! I had this same problem and if you search under VSS or Vehicle Speed Sensor, you will find very similar results. I used to have this problem, and now it still happens after replacing the VSS, but nowhere near how it used to. Look into that. | ||
| Joe Brittain (Joeandtiffany) New Member Username: Joeandtiffany Post Number: 2 Registered: 01-2004 |
Guys thanks for the responses... The LR family is the best. It thought I took the U-Joint and roto flex out of picture by removing the driveshafts. Could they still be the problem? I did have the VSS replaced in the truck but, it was vibrating before and right after the dealer replaced it... The VSS felt more like a lost of power. This feels more like something turning very fast out of round. Ideas? Or how to isolate the culprit? Thanks, J- | ||
| Kevin Fedyk (Kovert) Member Username: Kovert Post Number: 92 Registered: 05-2003 |
Hmmm, if you do find something else let me know as I still have a slight hesitation as you describe, but much, much less after replacing the VSS. | ||
| Matt Anderson (Disco01) Member Username: Disco01 Post Number: 115 Registered: 10-2003 |
Have you hit anything on the underside that might have hit the handbrake drum? |
