slight vibration on acceleration

Question

i have a 1994 Fleetwood Flair class A 22ft, I'm noticing a slight vibration when accelerating when up to speed it seems fine, could it be transmission or u joints, I only has 56000 miles but a lot of years.would appreciate some ideas.........Thanks

2003silverado · Answer

My first guess and easiest to diagnose would be U-joints or a carrier bearing on the driveshaft.  Usually longer vehicles have a carrier bearing to support the driveshaft.

horsedoc · Answer

Sounds like U joints.  Also consider loose bolt on transmission or engine supports,  I might find someone with a pit and have them check and tighten just to be sure.

rls7201 · Answer

Also, a plug wire starting to fail will cause a misfire while under acceleration, causing a vibration.Richard

wa8yxm · Answer

2003silverado wrote:My first guess and easiest to diagnose would be U-joints or a carrier bearing on the driveshaft.  Usually longer vehicles have a carrier bearing to support the driveshaft.silverado and I either think alike or have had the same problems.

jrscooby · Answer

I have had issues with a truck that was parked for months, then put back in service. Just as soon as stop, hit driveline with greasegun.
And a weak wire or plug often (Coil pack on modern engine?) is first noticed as miss under load.

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slight vibration on acceleration

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