What would cause this vibration - Page 2 - Competition Diesel.Com

DPC · 07-08-2015, 08:04 PM

Hope you figure it out, I have had the same issue with no solution. Changed about everything you can think of. Does your vibration seem to get worse when it gets colder, 45* and below?

davem3261 · 07-19-2015, 05:42 PM

I haven't had time to mess with it. My wife is driving it the rest of the week. I'm anxious to tear into it

madmikeismad · 07-19-2015, 05:59 PM

Literally just had this issue, but it was ujoints in the rear shaft. Another friend had the same issue with new ujoints, and it turned out they just weren't "seated" properly, and the straps weren't quite on right. Might pull the shaft and rotate 180* also.

EDIT: To completely rule out the rear shaft/diff/axles, pull the driveshaft, run just the front axle on jackstands. That might narrow it down to the trans/tcase.

davem3261 · 10-28-2015, 07:18 PM

Update
I finally got around to tear into the rear end. There was next to no preload on the bearings. In a certain spot it would jump up to 60 in lbs. I took it apart gears were fine. Bearings looked fine too. I went ahead and replaced all the bearings. After that no more vibrations! I never would have thought that was the issue but it was.

davem3261 · 10-28-2015, 07:19 PM

Update
I finally got around to tear into the rear end. There was next to no preload on the bearings. In a certain spot it would jump up to 60 in lbs. I took it apart gears were fine. Bearings looked fine too. I went ahead and replaced all the bearings. After that no more vibrations! I never would have thought that was the issue but it was.

07-08-2015, 08:04 PM	#21
DPC Name: DPC Title: Diesel Enthusiast Status: Not Here Join Date: Sep 2009 Location: Elgin, OK Member`s Gallery Posts: 218	Hope you figure it out, I have had the same issue with no solution. Changed about everything you can think of. Does your vibration seem to get worse when it gets colder, 45* and below? __________________ 2006 QCSB Cummins EFILive, Built Tranny, HE351cw/S480FMW, 60hp inj, 85%cp3 2003 ECSB Duramax EFILive, Built Tranny, GT4094R,PPE Dual Fuelers,RDL Headers and Up-pipes 620HP 1170TQ @ BDP 12-12-09

07-19-2015, 05:42 PM	#22
davem3261 Name: davem3261 Title: Too Much Time Status: Not Here Join Date: Oct 2009 Member`s Gallery Posts: 258	I haven't had time to mess with it. My wife is driving it the rest of the week. I'm anxious to tear into it __________________ 05 2500HD 6.0 Texas speed Cam and heads, S475 3000 stall. Ex money pit truck '04.5 2500 SLT QC SB 4x4 4.10's , HE351/S475 twins, BMS 100hp, FASS, ATS dual cp3, Fat Shaft Billet Trans, 5" aluminum driveshaft SOLD!

07-19-2015, 05:59 PM	#23
madmikeismad Name: madmikeismad Title: So mad Status: Not Here Join Date: Dec 2009 Location: Newalla, OK Member`s Gallery Posts: 14,347	Literally just had this issue, but it was ujoints in the rear shaft. Another friend had the same issue with new ujoints, and it turned out they just weren't "seated" properly, and the straps weren't quite on right. Might pull the shaft and rotate 180* also. EDIT: To completely rule out the rear shaft/diff/axles, pull the driveshaft, run just the front axle on jackstands. That might narrow it down to the trans/tcase. __________________ Mike Hill Last edited by madmikeismad; 07-19-2015 at 06:03 PM.

10-28-2015, 07:18 PM	#24
davem3261 Name: davem3261 Title: Too Much Time Status: Not Here Join Date: Oct 2009 Member`s Gallery Posts: 258	Update I finally got around to tear into the rear end. There was next to no preload on the bearings. In a certain spot it would jump up to 60 in lbs. I took it apart gears were fine. Bearings looked fine too. I went ahead and replaced all the bearings. After that no more vibrations! I never would have thought that was the issue but it was. __________________ 05 2500HD 6.0 Texas speed Cam and heads, S475 3000 stall. Ex money pit truck '04.5 2500 SLT QC SB 4x4 4.10's , HE351/S475 twins, BMS 100hp, FASS, ATS dual cp3, Fat Shaft Billet Trans, 5" aluminum driveshaft SOLD!

10-28-2015, 07:19 PM	#25
davem3261 Name: davem3261 Title: Too Much Time Status: Not Here Join Date: Oct 2009 Member`s Gallery Posts: 258	Update I finally got around to tear into the rear end. There was next to no preload on the bearings. In a certain spot it would jump up to 60 in lbs. I took it apart gears were fine. Bearings looked fine too. I went ahead and replaced all the bearings. After that no more vibrations! I never would have thought that was the issue but it was. __________________ 05 2500HD 6.0 Texas speed Cam and heads, S475 3000 stall. Ex money pit truck '04.5 2500 SLT QC SB 4x4 4.10's , HE351/S475 twins, BMS 100hp, FASS, ATS dual cp3, Fat Shaft Billet Trans, 5" aluminum driveshaft SOLD!