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?
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.
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.