OK, now I also have the bloody drivetrain shudder!
Basically my Overland has a bad shudder while acceleration between 25-40mph. It also has a shudder/vibration at highway speeds that feels ALOT like a wheel with really bad balancing. The highway vibration comes and goes. I drive about 150 miles of highway every day, so I have a lot of time to evaluate it.
The acceleration shudder is always there at 25-40mph, but it seems much better in sand/snow mode, but I think it is still there, just less obvious.
So I took it in for service and they said engine mountings need replacement and one tire has a flat-spot. Had the mountings and tire replaced, but it still had the same problem.
Took it to tire specialist and he told me I had to replace another TWO tires! Did that and it was fine for two days only. Now the shudder is back!
The shudder problem is fairly new for me. Had it for the last couple of months only. Possibly after the dealer/service center messed with the DTCM software because of 4WD problems in sand. It is now very good in the sand, but has the vibration/shudder issue. I am not sure that the two are related, but maybe...
Anyway, so today I got under the bloody thing and had a look to see if I there was anything obviously wrong. The only thing I could find was that the drive shaft coupling by the transfer case has thrown a lot of grease out. Sort of looks like a CV when the boot/cover is torn. I can’t feel any play or anything other than the grease, so I am not sure how serious this is. It is the first coupling at the "back" of the TC.
My theory is that the vibration/shudder is because the DTCM does not provide a "balanced" torque transfer to the back. That is why it seems better in Sand/Snow mode and also why it comes and goes. Could it just be a software issue with the DTCM?
The failing coupling makes me wonder though. Maybe the coupling is failing because of the strain of transmitting the "unbalanced" torque? Or could the vibration be entirely because of the coupling?
So, could any of you guys with the same problem go and have a look at your Jeeps drive shaft coupling? I THINK the coupling is failing because of the DTCM problem, but I could be wrong.
Any thoughts? WolfUAE, we are both in Dubai and seem to have a similar problem. Have you had any luck resolving your problems?
'11 WK2 Overland 5.7(Export)
Dark Charcoal, Dark/Light Frost Beige
730/1 NAV (REP)
(Built 21 Aug '10). Ordered on 22 Sept '10 and Delivered 25 Nov '10 in Dubai