turbo problem (I think)

[Ernie V]

I have had this proble since last summer, but the dealer can not seem to fix. When the truck is under load pulling my fifth wheel I get a high pitch noise sounds like a jet engine taking off. When I back down it sounds like your shutting down a jet engine.




No mods,no fluttering,no boost gauge, 2004 F-350 6.0. Seems to lack power when happens. If you back off the throttle and reapply it will sometimes go away.

[MrJohnWayne]

could just be the turbo whistling while under load. Do you have a boost gauge? Does it sound like it is fluttering while doing it? Are there any kind of mods to the engine? What year is the truck?

[usafracer]

Need to know what the truck is before we can go any further. Fill out your sig. with all the info and we can go from there.

[Ernie V]

2004 , NO MODS , NO BOOST GAUGE, NO FLUTTERING, LACKS POWER A LITTLE WHEN NOISE IS THERE. ONLY DOES IT UNDER A STEADY LOAD GOING UP HILLS AT HIGHWAY SPEEDS.

[harald@bd]

Sounds like the VGT is sticking!

[TomM]

tighten the clamps on your charge air boots and see if it helps

[npccpartsman]

Sounds like the up-pipe from the passenger side manifold either at the flex joint or the gasket between the up-pipe and the EGR cooler. They are notorious for cracking/blowing out and the thin stainless it's made from will whistle like a tea kettle under load. Sometimes very hard to see without taking it out. Look for black soot on your exhaust down pipe or along the firewall behind your turbo.

[bowtiehatr]

Originally Posted by npccpartsman

Sounds like the up-pipe from the passenger side manifold either at the flex joint or the gasket between the up-pipe and the EGR cooler. They are notorious for cracking/blowing out and the thin stainless it's made from will whistle like a tea kettle under load. Sometimes very hard to see without taking it out. Look for black soot on your exhaust down pipe or along the firewall behind your turbo.

i second this. plus this guy goes through some ypipes lol. if you see no soot anywhere, make sure your clamps are tight on the turbo and on the egr to ypipe clamp. if all is tight look for excessive oil leaks around all of the boots and intake. i had one with the elbow not sealing good- bad oring. i also had one with a turbo making a higher pitched noise than normal and it was the turbo itself.

[Ernie V]

THANKS FOR ALL YOUR HELP. IF THIS DONT WORK I SEE DURAMAX IN MY FUTURE. (JUST KIDDING)

[JohnDeereFarmer]

duramax is death( GMC= Garage Mans Companion)