Turbo whistling

[BirddogTN]

Well I finally got all the studs/head gaskets/HPOP issues straightened out and have been driving it since Saturday without problems,,,, until this AM. I noticed an intermittent whistle coming from the engine compartment at start-up this morning. Give it a little gas and it goes away, and then comes back. It is also noticeable at driving when around 1500 - 2000 RPM's. Sounds like a high pitched vacuum leak but it's coming from the area where the turbo is mounted. What could it be? Turbo bearings, Turbo Boot leak?????? I haven't had a chance to look at it thoroughly yet and am looking for suggestions.

Thanks in advance!

[outlawdiesel]

did you crack your up pipe?

[BirddogTN]

I hope not.

Wouldn't I hear exhaust too if that was the case?

[outlawdiesel]

I just know alot have cracked that up pipe.may what to check that in the morning.when motor is cold.

[BirddogTN]

When I unplug the turbo solenoid the noise goes away. I suspect internal problems with the turbo but what could it be?

[nsrchofpwr]

subscribed

[jamstoyz]

maybe a hole in your intercooler boots

[BirddogTN]

The boot feels spongy to me so I'm gonna replace it tomorrow but I cannot find a leak if there is one. The noise is definately coming from the turbo area of the engine and to me it sounds like a shaft/bearing squeal, comes and goes.

[Diesel Freak]

I'd check your clamps on up pipe at turbo. Look for soot that may be yer sign.

[Diesel Freak]

Originally Posted by BirddogTN

The boot feels spongy to me so I'm gonna replace it tomorrow but I cannot find a leak if there is one. The noise is definately coming from the turbo area of the engine and to me it sounds like a shaft/bearing squeal, comes and goes.

You can pull your boot back and inspect impeller. You may have some bent blades You will have some up and down movement on blades but should not be rubbing housing. Good luck!