Just started today driving it home, engine was warm after a good 30 or to 50 mins of driving in city driving.....04 F150 5.4

I read about this: http://www.justanswer.com/questions/...-making-a-loud

Not sure if it's that. I tried reproducing the sound when stopped but only works when i pick up speed and am slowing down......didn't work at idle or startup and I need it for the snow storm today so I'm worried as to whether it should be driven like this or not.

Also if anyone has any ideas as to what it may be? Can't be the belt since it doesn't doing while idling.


Thanks

 

Exhaust manifold gasket maybe?

 

Sounds like a bomb to me...

















I agree with Stealth... don't know much about it, but that seems to be a symptom of that.

 

Does it go with speed or rpms? I guess I'm asking if there's a correlation between the two

 

hmm when I slow down is when I hear it more especially costing to a stop....don't hear it now or ever since the snow storm I haven't heard it or at least i cant.

I did have true duals put on so that doesn't help figure it out :P

 

and now I have a metal on metal sound.........heard it after a long ride, slowed down to go thru ezpass and when I accelerated that is all I heard, and when I slowed back down it was doing it again and stopped when I stopped and didn't happen again.....2nd time so far and I'm not sure what it is.....sucks because I need it next week to transport a 5.4 Motor for a friend from 1.5hours away


Think its the tranny?

 

doubtful, sounds like the iwe solenoid, see if goes away in 4x4

 

Is your exhaust touching your tow hitch?? that's what most likely causing the metal to metal sound. I had the same problem. go back to the place that did your exhaust and have them realign it.

 

yup sir haven't heard it in 4x4 which is what i've been using the last week due to the snow storm but had it on 2wd yesterday for a 1+hour trip and then at the toll near home is when it decided to make noise


(nope they are 45 degree angled to the side)

 

its the iwe solenoid then

 

alright cool hasn't happened again hoping to have the part sometime next week.....opened my hood and saw how soak it was getting.