I have a 2004 F150 FX4.

The problem is that the rear end chatters when going around a corner.

I guess another word for it is a shuttering when I go around a corner. The whole truck shutters, but you can feel it coming from the rear end.

Help me guys.

 

This is called your clutchpack. Im aout 99% sure on this because my truck did the same thing and the stealership told me its the clutch pack. There was a tsb for it a while back so take it to your local stealership tell them your having a problem with your clutchpack and they should take care of it. I also have a 2004 f150 fx4

 

What's the clutchpack do?

 

I actually put a post about this already. It is the clucthpak. I brought mine in for the chatter, hop or whatever you call it. The dealer put 4 paks in and still nothing. Until they used a high density clutchpak. The dealer also sent for this information and supposedly issued a TSB on it due to me going to 3 different dealers with the same problem. This was on my 04 FX4. The dealer who issued this TSB to Ford was Haldeman Ford on Rt. 33 NJ. You should not have to pay for that.

 

So, even if I am out of warranty, I shouldnt have to pay for it?

 

Yeah its the clutch packs, they'll put a friction modifier in the rear diff.

 

If you have an LS, a certain amount is normal. It's the LS doing it's thing and the wheels trying to lock up. If it's excessive you need some modifier. Mine does two or three hops if I turn sharply while accelerating.

 

You'll have to pay for it if it's out of warranty, even though it's a TSB.