Have an 04 F-150, 5.4 Lariat. Best truck I've ever owned. 77k miles. Punched it from a dead stand still making right turn today. The next two starts from sitting still produced a fairly loud (very noticable) "clank" from right underneath middle of truck. Checked u-joints not to long ago but will check again. Any other thoughts on this. Drove truck about 10 miles with no issues afterwards....of course I was going easy then.

 

I'd say to check the u-joints as you stated first.

Is it a 4x4? Was 4x4 "on"?

 

negative.. 2wd

 

Sounds like it could be a tranny problem

 

Can you "feel" the clunk (i.e. as if it is the drive train), or is it just noise? Maybe a loose muffler/exhaust hanger.

 

That's what I was fearing. When it rains it poors. Gonna' get to checking it out tomorrow. I definately don't baby my truck but I don't abuse it either. Let a slow poke get to me and just stood on it out of the gate. Do-over please. Thanks for the fast reply and any others in advance.

 

Jack the rear wheels off the ground and rotate the drive shaft, it sounds just like a U-joint problem to me!

 

thanks D-bird....first thing I'll do. What should I look for?

 

definate feel, Bucko, but was the first thing that came to my mind....man would that be nice and easy....thanks man.

 

Prolly gonna' sleep better with something to go on. Thanks fella's...really appreciate it.