Quote:
Originally Posted by Jareb
I'm going through this same issue with my car. I've replaced Flex discs, center support and bearing, motor mounts. All MB factory parts. Next up is trans mount, rear diff mount, centering bushings. If that doesnt fix it...then I'm going to change the universal joint. Its not the tires because the vibration only occurs on acceleration. It is usually ANY acceleration even the slightest push on the accelerator causes it. I can be cruising along at 30-60 mph and its smooth as silk....step on the peddle slightly and a vibration that you can feel through the seat happens. Back off slightly to cruise again and its gone. The harder you accelerate....the more you can feel the vibration. Its a frustrating problem to narrow down. I will have rebuilt the whole driveline by the time I figure it out 
John |
Thanks for the info. Now I know what's wrong with my car!
You have been driving it.
Seriously, I'm having the exact same problem, as you have said.
It's only happens during acceleration I can coast at 42mph and it's smooth as silk, the instant I touch the pedal there is the vibration.
The slightest incline in the road between 35 to 50 and there is the vibration.
I can cruise at 42 while it's vibrating and slip it into Neutral and then NO vibration. Tires are almost new and balanced. I did replace the axle shafts 6 months ago and after there was no vibration. I used some really cheap FEQ brand and had bad luck with them but the 3rd pair have been fine so far. I am going to re-boot the originals, switch them from right to left and get the FEQ outa there (pun intended). I haven't done the engine mounts in 2 years and the trans mount looks fine as do the diff. mounts, new muffler and other hangers. I am almost out of ideas.
Good luck with yours and please let me know if you find out what the fix is.