I have drove diesels for years, but recently got one of my own. The truck is making a whistling sound when driving it, but only when giving throttle. I think its a possible intake leak or turbo problem. When the truck is at an idle or revved up in park, there is no noise at all. I had one opinion that the bearing in the turbo was going out. Looking for some feedback...has anyone heard this noise from a turbo?

 

got a video ot something. lots of options with that basic discription.

 

You have an 04 truck which could have an 03 or 04 motor depending on production date. The 03 engine had a different turbo that's known for it's whistle. The 04 had a pretty decent whistle too, but not as much. As Cheezit said, there are numerous things that could cause a whistle and it may or may not even be a problem at all.

 

Did it just start whistling or did it get louder? Like they said the 03 & 04 whistle louder than the rest I have an 05 and i can defiantly hear the difference I think the louder they whistle the cooler it is but, I guess if its to loud it would get annoying after a while. Upload a vid.

 

Yeah its a 04 truck but the motor and the turbo are from an 06 model. The noise is considerably loud, not the normal turbo noise. Today I took the intake boot off the turbo and checked for play in the bearing, that seemed to be fine. Its gets louder at higher rpms, I can drive it dowm the road at 65mph and feather the throttle and it doesnt make a sound, but as soon as i can into it, the noise begins. I got one opinion today, that the exhaust may be restricted and the whistle is coming from there? Has anyone had that problem. The truck has set for about a year, trying to get the bugs worked out. I will have a video tomorrow.

 

possibly a cracked bellows in the y-pipe.

 

ok thanks all help is apperciated

 

I just installed a 4" MBRP turbo-back exhaust on my 2003 6.0L Excursion. It never whistled before, but now it has a high-pitched whistle that almost hurts my ears. It only whistles when my boost gauge reads anything above 1.

Why would I be whistling so loud after putting on a 4" exhaust? It's pretty annoying.

 

juvat97 you have got the typical 03 whistle . its not going away unless you put it back to stock. Most will pay for that sound , hell i love it

 

Thanks wulfman--at least I know I didn't screw up something when I installed the new exhaust. Now that I know it's "normal" I will eventually learn to ignore (or even love) the sound.

I'll tell you one thing I do love already is the difference in power and acceleration. It was immediately noticeable on the post-install test drive!

 

Hell yea 03s rule

 

Yes, I'm quickly learning this!

 

I hate to say this but i am not to bright on this stuff and my daughter did mine so can't be much help, and she's not home now.

 

right there with you guys that whistle is the sound of perfect flow