this is just a re post from another thread...
When I came across kdillard21's post it seemed all to familiar...this is what I've been feeling....only at a higher speed


Re: shudder, vibration at 30-40 mph?

quote:
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Originally posted by kdillard21
I have a vibration, shaking, or shudder coming from what feels like the rear of the truck, always at 30-40 mph. It begins at 30 mph and stops after 40 mph. It also does it now matter whether I am accelerating or decelerting and regardless of engine rpm. Any Ideas out there?
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I'm getting this too at about 50- 60 mph.... stops after 60.

If I switch into neutral and coast it stops....back in gear it does it... like kdillard21 said whether acc. or decel.....but not coasting in nuetral.

I thought I was imagining it but its starting to bother me now...

I feel it in the wheel, at my feet, in the seat...
Feels sort of like a u joint going bad.

kdillard....does this sound like the same thing?

Anyone else??


__________________
klassic
04 FX4 Scab, Silver/Two tone, Black cloth captain chairs, Mirror and towing package, Power sliding rear window, 3.73 LS, 18's, LineX
https://www.f150online.com/galleries...y.cfm?gnum=3831

 

My 04 Lariat Scab was doing the same thing at 46 - 48 mph. They added some shims to the driveshaft and it's barely noticeable now.