horse4949

I have a 2004 F-150 4x4 4.6l and I am getting a noise from the rear of the truck when driving with the rear slider open. It sounds like a loose heat shield or some like that. But I have been under that truck beating on the exhaust pipes, the cat. and all the heat shields are tight, and I just replaced the IWE Solinoid...I'm stumped, any ideas?

SCORGE

Question, got a toolbox or anything back there?

Tommy J

I think I may have something similar. Any possibility its one of your cats rattling? I know you said rear but sound travels weird. Mine actually still does it in drive but not moving with foot on brake. I literally sort of trusted my wife to put it in drive while I crawled under the rear end. Gave up. Sorry I may not have helped and I know its frustrating

Tommy J

Sorry, you did include cat, How about muffler?

SCORGE

If it's rattling while under acceleration/driving....maybe a blown baffle in your muffler

horse4949

Nothing in the bed. It only does it when moving, and not all the time...it weird...It might be the cats but I saw a post on here that they were saying it could be the flowmaster like what I have on my truck,,,but im not buying that yet...

horse4949

That makes sense.. its a flowmaster on it and its afew years old....

horse4949

Muffler too....

SCORGE

I had it happen. Drove me nuts. Sounded like a steel ball in a hollow can

horse4949

Yes, I need to get it fixed...when I get back from the fourth holiday....