Which drive shaft causes the vibratio...

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Author Message   Dave (Discoverover) Member Username: Discoverover Post Number: 41 Registered: 11-2002 Posted on Thursday, May 22, 2003 - 09:08 pm:    My 96' discovery has driveline vibrations only at highway speeds. It began about 3k miles after a 2.5 inch lift. Under normal circumstances, which drive shaft is most likely to cause the vibrations, front or rear. The rear flex coupling is not cracked or showing wear. Thanks, Dave   Will Roeder (Will_roeder) Senior Member Username: Will_roeder Post Number: 639 Registered: 02-2002 Posted on Thursday, May 22, 2003 - 09:34 pm:    Generally the front is the one that will vibe more, but it always varies from truck to truck. If you have a rotoflex and 2.5" of lift, it could very well be the rotoflex...   EricV (Bender2033) Member Username: Bender2033 Post Number: 178 Registered: 08-2002 Posted on Thursday, May 22, 2003 - 09:35 pm:    Hrmm, I'm in the same boat. I'm gonna try to eyeball it this weekend.   Will Roeder (Will_roeder) Senior Member Username: Will_roeder Post Number: 640 Registered: 02-2002 Posted on Thursday, May 22, 2003 - 09:35 pm:    oh yea, forgot to ad something... To figure out which one it is, remove the front shaft, lock the CDL, and drive around. If the vibe goes away, you know where the problem is. If it still vibrates, then put the front shaft back in, and remove the rear one and drive around.