I tried searching here. It looks like someone people have experienced the same problem as myself. From a stop to about 25 mph, the trucks shutters and shakes. I thought that it was just the road that I was on. Come to find out, it happens all the time from a stop. More noticeable when going up a hill from a stop.

I have heard everything from "thats normal, all F150s do that" to "my driveshaft had to be replaced" or "my rearend needed some shims." Which is it?

It seems as if the shutter is getting worse. I did put on a hellwig swaybar that I love, but this shutter was happening before then.

 

Sounds like the rear diff clutch packs. I had the dealership flush the rear diff and replace it w/ new fluid plus friction modifier. Hasn't happened since.

 

Add a little friction modifier to the diff... see if that solves it. It should.. but if not you'll need the clutch packs replaced.

 

I will be going to the dealer on Thursday. They are only 2 miles from my office.

Should I take off the hellwig swaybar? I dont want the dealership to say that the bar is what is causing it to shutter when we both know that is not the case.

 

Heck no, the dealer won't mess with you over that.
I have the hellwig on mine too... they acually adjusted mine on my last visit.

 

Ive also read this is due to it not being a single straight rear axel so it is going to move some in the joints. Just something I read. I have it too, excattly as described. However I know nothing about adding that friction stuff or what not.
Any further details would be awesome.

Or a cost for a dealership to take care of this would be good too. Im about to roll 100k on my 04 so id love to know before I hit that.

 

My last truck did the same thing. It was the older model F150 (1999) and the problem turned out to be the transmission

 

I think it cost me $160 and was done in about an hour.