Jerking..... hahaha! no seriously....

[solaceinsilence9]

Sorry, couldnt help myself. But that really is my problem. When I start off from a dead stop I get a sudden jerk which feels like its coming from the transmission before the truck will start moving. Ive also noticed the drive indicator on the dash is a little off. While in D it will be a off to the right instead of in the center of the D like it should be. I only get this surge when I first start from a dead stop. Not while shifting, not while slowing down, now while stopping, ONLY when I drive from a dead stop. I've got some 30.9.50's on the truck... Could this be too heavy of a tire for the transmission? Or could this be a worn out/broken tranny mount?

 

[4x4junkie]

Is it a real hard jerking? or more like a bump or thump on takeoff?

If the latter, it's probably the slip-spline on the rear driveshaft needs to be lubed.

 

[solaceinsilence9]

I would say the latter... It kinda hesitates when you first push the gas, then you feel it "kick" in and thats that. But you feel it through the whole truck.

 

[4x4junkie]

Yeah, I would say driveshaft slip-spline.

Ford had a driveshaft TSB on that for your model. All it needs it a sufficient quantity of Moly-type CV joint grease liberally slathered on (and inside) the spline (it's probably about a 20 minute job to pull the driveshaft, lube it and then reinstall it).

 

[doorgunner]

Put the truck on FLAT ground--CHOCK the tires from rolling forward OR backward---put it in neutral----and check for sloppy/loose parts while your under there--JERK (seriously) everything and watch/listen for movement...

 

[solaceinsilence9]

Really? I had no idea that could be the problem... Well thanks for the response Ill check it out and post back with my results.

 

[AngryLepercon]

When I first bought my truck 2 years ago it had that problem! I took it back to the dealer next day and they had to put in a yoke slip kit and a steering rack and it solved my problems.