Strange noise in O/D while boosting

[GOZAR]

Im getting this almost like chirping noise aroung 12 psi and up in overdrive. Sounds like its from the turbo but not sure. I dont think it compressor surge. It has been doing it alot and it gets annoying, also more noticable when im towing. Help appreciated


Matt

[Ramsmoker]

Sounds like a leak in the air charge system. A little hole in one of the connectors most likely.

[payne5757]

I believe my truck is doing the same thing. I dont think its turbo surge though. When Im accelerating and the tranny gets into 3rd or 4th, the turbo repeatedly makes the exact same sound as the coughback u get when u build up a considerable amount of boost and then let out all of a sudden. Its very similar to a BOV in a turboed car.

[owtcast]

I've heard similar on some of our firetrucks when there was a leak on the pressure side of the turbo plumbing. Sometimes when fittings aren't tight enough or have been pulled to where it leaks a little when at higher boost it makes a squealing/chirping sound as the air is being forced through a tiny spot. Sort of like letting the air out of a balloon slowly.

[roer2234]

I have the same problem with my truck under hard acceleration and when i am pulling my horse trailer. is this a boost leak or something else, and how can i fix this issue.

[GOZAR]

Mine was compressor surge, the wicked wheel got rid of 90% of it.





Matt

[lilredpowerstroke]

Originally Posted by payne5757

I believe my truck is doing the same thing. I dont think its turbo surge though. When Im accelerating and the tranny gets into 3rd or 4th, the turbo repeatedly makes the exact same sound as the coughback u get when u build up a considerable amount of boost and then let out all of a sudden. Its very similar to a BOV in a turboed car.

Hate to tell you this but that is surge.