2008 dodge ram vibration-off accerator

vmk69 · #1 10-27-2009, 10:29 PM

Has anyone experience a vibration in the 3rd Gen Ram 2500 HD when off the accelerator? I thought it was the tranny until I tried putting it in neutral while slowing down, the vibration appears at slower speeds when slowing down and stays until stopped. Does anyone have any suggestions which bearing/u-joints would be the most likely offender? The truck is perfect at all speeds as long as I am on the gas.
Any advise would be great!!!!

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Coal Train · #2 10-28-2009, 12:12 AM

What model is the truck.

Is it a QC/LB or a SB/MC.

If it has the 2 piece driveshaft, that would be the first place I look.

Check out the center carrier bearing and the u-joints.

vmk69 · #3 10-29-2009, 10:16 PM

It is a Quad cab, I should have also mentioned that it is 4 wheel drive.

pizzo · #4 10-29-2009, 10:45 PM

It really could be any of them the center carrier is a very good start. if its a u joint 99.9% of the time the squeak. to bad they don't have grease fittings to grease the u joints.

really you will need to get under it and check everything out. put it up on jack stands on all 4 so you can spin the tires maybe you will hear it squeak or the center carrier bearing is bad

vmk69 · #5 11-01-2009, 10:43 PM

Thanks for the tips guys!! I've checked all the bearings and can't find any problems. I guess next weekend I'll have try Pizzo's idea and get all 4 wheels off the ground.
I tried running with the jake brake on, the vibration disappeared until I applied the brakes. Are there any issues with the rotors on the 08's? They look alright, but I haven't gone so far as getting them off and turned yet.

vmk69 · #6 11-06-2009, 08:55 PM

Thanks to those who replyed!!!/Helped!!!!
I have solved my vibration problem. Believe it or not, I torqued the u-bolts on the rear end to 115 ft pds and my vibration has disappeared. The u bolts were at 100 ft pds(10 too low) I don't know why the torque was low but I know my problem. I know they are 5 pds too high now but it worked. I will drive till spring and see what happens. If the problems comes back, I know I need new u bolts, if not, I will replace them next summer anyways.

pizzo · #7 11-07-2009, 07:40 PM

glad you found that. It would be bad to break while you where driving. My question is did you lift it or anything that the u bolts would have to be loosed up.

I would check them often. to be on the safe side

vmk69 · #8 11-10-2009, 07:11 PM

No lift, stock suspension all the way around. I have only owned the truck a month, with only 25000 miles and the price I paid, I was ready for some repairs. This was the last and most troubling issue. Probably why the guy sold it so cheap.
Anyways it's fixed and I know what to watch.
I just want to thank the forumn for being here and the members for their time. You all Rock!!!!!