2005 ram 2500 has 76k miles squealing sound coming under hood started when hot outside under heavy load now is doing it most of the time when under half throttle or more turbo is not making its ideal normal sounds except under light load any idears

 

checked for leaks around the boots?

 

Checked boots in good condition as are the clamps tight sounds like a loose belt but different

 

had friend power brake tranny get turbo spooling up cannot find leak sounds like noise is coming from down by the turbo. Completely lost on this dont now what to think.

 

I have the same thing on my '06... Dealer pressure checked it and found nothing. I'm sure it's a pin hole leak in one of the boots... time for silicone boots.

 

I had a weird squealing noise coming from my turbo that kept getting worse and worse... Took my intake tube off and there was scratch marks on the side from the fins scraping it. I guess the bearings in the turbo where shot. I found a cheap used one and haven't had a problem since.
U might want to check the oil supply line to the turbo, make sure its getting oil...

 

Mine started a warble "squalling" type noise suddenly about 160k...been that way for 45k. I almost want to say its the electronic solenoid that controls the waste gate? I hold good pressure and the turbo checks out good as far as play.

 

Take the intake off it and see if there is any play in the turbo shaft. And if you can spray some soapy water on the boots and if theres a bubblle there is a pinhole

 

I looked the boots over a while ago, they seemed fine. It happened right after the injectors were replaced for the second time. I have also lubricated the waste gate linkage with no effect. There is no play in my turbo whatsoever...

I'll give the soapy water a try tonight!

 

Alright man keep us updated