sandmanwv Posted November 8, 2009 Share Posted November 8, 2009 I have had a driveline vibration between 45 and 55 mph for some time. I have replaced all of the u-joints but nothing changed. I have noticed that it seems to be getting worse, especially if I pull a small utility trailer. Any suggestions would be greatly appreciated! Link to comment Share on other sites More sharing options...
Pete M Posted November 8, 2009 Share Posted November 8, 2009 vibes around 50 mph can sometimes be tire issues. :dunno: Link to comment Share on other sites More sharing options...
Eagle Posted November 8, 2009 Share Posted November 8, 2009 Stock vehicle, or lifted? If lifted, how are your u-joint angles? Link to comment Share on other sites More sharing options...
CWLONGSHOT Posted November 8, 2009 Share Posted November 8, 2009 I agree with Pete, vibes that occur at or near 45mph are almost always tire related. Either balance or internal tire problems... Why 45, you ask? Because that's the threshold where tires need to be balanced to run true. CW Link to comment Share on other sites More sharing options...
Pete M Posted November 8, 2009 Share Posted November 8, 2009 almost always. had a vibe in the liberty that happened at similar speeds and it was a dried up rear U-joint. Curse those non-greasable joints! :fs1: Link to comment Share on other sites More sharing options...
Eagle Posted November 8, 2009 Share Posted November 8, 2009 Conversely, my 2000 XJ 5-speed has a horrible vibration (not shimmy ... vibration) above about 40 or 45 MPH that's caused by driveshaft angles. Mine has the Up Country suspension. The factory wanted to put a transfer case drop on it, which to me is a band-aid approach. Eventually, I'll get around to putting a short shaft conversion on the transfer case, but for now I just keep an easy foot on the loud peddle to avoid stressing the u-joints any more than necessary. My ill-fated 1999 WJ was even worse. That was an Up Country model, too. Since the OP didn't specify, I'm wondering if the axle might be a replacement, and possible the spring perches weren't placed at the correct angle. We need more information. Link to comment Share on other sites More sharing options...
sandmanwv Posted November 9, 2009 Author Share Posted November 9, 2009 Thanks for the help. I thought it may have something to do with the tires. I am having new ones put on wednesday. Link to comment Share on other sites More sharing options...
sandmanwv Posted November 14, 2009 Author Share Posted November 14, 2009 New tires did not entirely solve the problem, although I noticed that if I accelerate hard the vibration is very noticeable. If I let off of the gas and coast, the vibration is very noticeable. But if I accelerate very slowly the vibration is hardly noticeable. Truck is completely stock, new u-joints throughout. Had new ring gear and pinion installed a year ago. Link to comment Share on other sites More sharing options...
Pete M Posted November 14, 2009 Share Posted November 14, 2009 Dana 35? Link to comment Share on other sites More sharing options...
HOrnbrod Posted November 14, 2009 Share Posted November 14, 2009 Had new ring gear and pinion installed a year ago. I had the same driveline vibration at 35-45 MPH that drove me crazy for about four months. Pinion angle was perfect, new tires new u-joints, even a new driveshaft. The problem turned out to be in the differential after I regeared. I screwed up setting the pinion preload wrong by not using a new crush sleeve. :fs1: I then had a shop that knew what they were doing re-install the gears and no more vibes. Link to comment Share on other sites More sharing options...
sandmanwv Posted November 15, 2009 Author Share Posted November 15, 2009 Yep....Dana 35 Link to comment Share on other sites More sharing options...
sandmanwv Posted November 15, 2009 Author Share Posted November 15, 2009 All new parts, and work done by driveline mechanic with 50 years at Chevy dealership. Link to comment Share on other sites More sharing options...
Pete M Posted November 15, 2009 Share Posted November 15, 2009 I don't trust reworked Dana 35s. The housing just isn't very strong. :( Link to comment Share on other sites More sharing options...
mvusse Posted November 15, 2009 Share Posted November 15, 2009 You don't trust ANY 35, Pete, reworked or not. Link to comment Share on other sites More sharing options...
Pete M Posted November 15, 2009 Share Posted November 15, 2009 tru dat. It goes double for one that has prior failures. Link to comment Share on other sites More sharing options...
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