my 1988 lincoln is shuddering or vibrating when on the interstate 55-70 mph it stops immediately when I take my foot off the gas. As soon as I touch the gas pedal to resume speed it starts again......help
Country: United StatesMake: LincolnModel: towncarYear: 1988Engine: 5.0 302 EFI
changed the upper and lower control arm bushings, balanced all 4 tires, and a wheel alignment...
Hello, I am RandallAre you saying you feel this is near 100% driveline vibration and not engine like a miss in engine correct?If so,, where do you feel the vibration. seat, steering wheel. brake pedal or some other spotI need some more detailed info to see if i can help you. Thanks
the steering wheel stays with a constant vibration, also 3 weeks ago I changed the rotors they were old and probably warped, used to give me brake shudder. The vibration feels like it runs throughout the whole car, really rough at times....like you can feel all the road surface even when u on smooth blacktop
Not being there is difficultFrom what you have written, it sound s to me like a possible bad trans mount at rear of trans, or a failing ujoint on the drive shaftOne would need to remove the driveshaft, work all joints by hand feeling for any tight ones.rear trans mount has to be inpected closebe sure rear differential fluid is full and cleanI can only give things we have run into and will cause exact same thing. Tires generally will do this most of time but you ruled them out, Alignments will not cause a shimmy, only drifting, pull or tire wearballjoints? generally make nosie only but they have been ruled out so.. I am giving my thoughts and really lean to possible bad ujoints
ASE Master Tech, 32 yrs experience, all aspects of diagnostic and repairs