Vibration @ 40 Mph

[George Dreyer]

Motor mounts ok, tires ok. Vibrates both in and out of overdrive. No vibration above or below 40 mph. 3.8 automatic.

[email protected]

 

[trombonedemon]

You have to be more specific, location of the vibration would be helpful.

 

[George Dreyer]

Thanks, both through the steering wheel and the floor.
I investigated more and discovered I have defective motor mounts that are most likely the problem. Also a defective tie rod end.
Thanks again.

 

[Gearbanger 101]

heck the condition of your driveshaft U-joints and engine balancer as well. Both are known to go bad after a few years.

 

[flstang65]

+1 on checking the u joints. Also, if you have one bad motor mount, might as well do the other and the tranny mount.

 

[George Dreyer]

Thanks for the input. Both motor mounts and transmission mount were bad. Did it myself in my garage. It did take me the better part of the day, but I am over 80 years old so I just don't move as fast as I once did. Also did the U Joints at the same time.

 

[trombonedemon]

Wow, 80 years of age and still jacking up a 3500 lb. car and replacing motor-mounts?!?!?:stig:

 

[flstang65]

Good for you!