Shaking while accelerating

Randonizer · Oct 27, 2013

Have a 2001 F250 with 127000 miles. Has a 6.5" lift and 37s. While accelerating it shakes pretty badly. Only does it at low speeds and seems to only do it in first. It is an automatic. At higher speeds still shakes a little but not much as low speeds. When shifting into neutral and give it gas it does not shake. So it is drive train related. I believe it is maybe the driveshafts or worst case the tranny. Would like some input before i start replacing parts.

sootie · Oct 27, 2013

It may be axle wrap which traction bars could fix. Also check your carrier bearings and u-joints.

BKopp · Oct 27, 2013

Sounds like possible drive shaft crosses. Chock the front wheels, jack up the rear and get under and have a buddy rotate the wheels back and forth is a good way to see what the drive shaft is doing

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smokin99stroke · Oct 27, 2013

did it just start or has it been doing it since the lift? carrier bearing drop?

David N · Oct 27, 2013

My stock height truck did something similar to that when I put the new motor in. Turned out an injector wasn't plugged in 100% correct. But I was getting a CEL with mine.

Randonizer · Oct 28, 2013

It just started the other day. Had the lift on for about two months now. I'm gonna replace u joints see if that works

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Randonizer · Oct 29, 2013

smokin99stroke said:
did it just start or has it been doing it since the lift? carrier bearing drop?

Carrier bearing drop wont work since I dont have one. I have a short bed extended cab which has no carrier bearing. Turns out bolts in my tcase were loose causing it to shake. No idea why they came loose though.