Ok i got in my truck the other moring to go to work and i went to pass on the interstate and when i hit about 15 psi of boost i heeard this sound comeing from the turbo and it wasnt the normal whistle it sounded like a a mouse being run over a loud whine almost and it does it all the time now when i hit anything above 15 psi and i dont know if the bearings went bad or what. a few months ago i took the intake tube off just to look in their and their was some dried oil on the turbo inlet i didnt pay it any mind and went on so what do you think it could be? And what are my options if the bearing went? thanks alot guys

 

youve got a torn boot. . .from the turbo. . .it is just small enough to allow you to get 15psi, but when it lets loose that is the sound you hear. . .pull all 4 off and look at them closely to see any cracks.

 

ok im going to do that right now!!!!!!!!!!!!

 

Ok the boots going to the intake manifold and comeing from the inter cooler are slide down about a half inch so maybe they are leaking their?

 

possably. . .you just need to look for tears. . .if you cannot find any tears you might not have tightened the clamps enough.

 

I just went through this last weekend!!!! Take the boots off and bend them, the crack will stick out like a sore thumb! [sm=smiley20.gif]

 

Did you get those silicone boots Bob ??

 

Not yet, still running on Plan B. I replace the torn boot with a 3 inch piece of silcone tubing from the gasket and rubber place here in town. They had some small pieces they let me have cheap. I still need to order something because the 3in to 4 inch boot on the intercooler itself is not in that good of shape. I just hate spending $200 for four 5 inch pieces of rubber and 8 hose clamps.

 

My truck has been making the same or similar noise. I don't have a boost guage, but whenever I accelerate while towing I hear an extra turbo noise. I told a diesel mechanic about it and he said it could be a bad bearing, but hopefully a good inspection of the boots will save me some money.