Vibration when decelerating Help!

[Marshall]

Yet ,I know about my transmission, but sounds like the new motor is doing the same silliness
I wonder how many check oil these days, I now we do here. BTW, I have never added oil in a Ram for 20 ? yrs.
50 yrs ago I would have worried about that, not lubing right.

 

[jimboschnitz]

I agree with most of the conversations listed above, but I believe if the driveshaft was the culprit from the beginning it would be evident even if the transmission were in neutral. According to your previous posts you said when the vehicle is in neutral the vibrations disappear which leads me to
believe that the vibrations are caused by the reverse torque on deceleration. All else being eliminated, new components etc., it has to be one of two things. A loose motor mount or there is an issue with the driveline angle.

 

[Hardracer]

Sounds like the new tech.has a head on his shoulders...
Iam pleased to hear the dealer is working with you on this situation...pretty rare from what I read on here...
Keep us posted

 

[truck2569]

I read your post last night and reread it again this morning. This is an interesting one especially since the transmission was replaced and the vibration goes away in neutral. My only guess is a bad motor mount because the stress on engine is removed in neutral and acceleration would continually strain the engine against a bad mount and eliminate the ability to vibrate, maybe.

Hopefully someone else has an idea to share. Good luck.

Sounds like a broken belt in one of your tires. It will cause a vibration but not all the time. Myself I would change the u-joints. But that is me.

 

[truck2569]

I agree with most of the conversations listed above, but I believe if the driveshaft was the culprit from the beginning it would be evident even if the transmission were in neutral. According to your previous posts you said when the vehicle is in neutral the vibrations disappear which leads me to
believe that the vibrations are caused by the reverse torque on deceleration. All else being eliminated, new components etc., it has to be one of two things. A loose motor mount or there is an issue with the driveline angle.

Is the driveshaft running true. Maybe your missing a weight.

 

[jbyrd89]

Sounds like a broken belt in one of your tires. It will cause a vibration but not all the time. Myself I would change the u-joints. But that is me.

They are brand new tires and have all been on the road force balancer. I'm going to let them replace the driveshaft and go from there

 

[jbyrd89]

Well, sadly the driveshaft made no difference. After almost 3 months of back and fourth to the dealer, I decided to get rid of the truck and get the wife a new grand cherokee.