hey guys,Iam new to this site.I thought i would ask about this exhaust vibration type of noise i hear just taking off or undervery light acceleration before the 1-2 shift.my truck is a 03 250 ext cab 4x4 6.8l that i just purchased with 25k miles
thanks
chris

 

Look for loose heat shields all along the pipes.

 

exhaust stock? if so do as nomo says and have some one while standing still slightly rev it up to help seeing if you can find it. could also be the cat starting to go bad .

 

I did check the heat shields,ok at this time.Is this noise the exhaust flutter many are talking about?anybody have the jba headers?
chris

 

my headers are from ford. but man does my system ping around at idle

 

HI.. my 2003 F250 did the exact same thing. It turned out to be that inspection cover on the bell housing I tapped it with my hand and it was tinny but in no way did I think that was where the noise was coming from.. But it was a bit loose (can move it back and forth ) so I put felt in (to wedge) and the noise above went away...

 

strat-I'll check the cover-thanks

captain-what do you mean pings at idle?

 

i have headers and flowmaster. the pipes ping like headers all the way to the muffler at idle, pinging and exhaust noise inside the pipe. hard to really explain other then it sounds like my old race mustangs pipes

 

I would go back and check those heat shields all the way down the pipes. Mine had cracked the welds about 4 feet back from the engine. Drove my nuts for months. I would check the transmission shield, the heat shields, and every bolt. Then I finally realized it was the welds on the top bands that broke loose. Put a clamp on it and it fixed everything.