I have a t3\t4 garrett and it no longer spins at an idle. I go to school at Lincoln Tech, and was doing work to my car yesterday. Someone screwed with my stuff, and turned the boost up really high. It probally hit 20psi or so when I floored it. I let out immediately. No damage then...
Today I was changing the trans fluid and started the car up... I looked down that the turbo was not spinning! At all other times it acts fine. It has a little shaft play. Spins as easy as can be. Revs up and builts boost just like it did before. If you rev it up and then let it idle, the turbo slowly comes to a stop. Once it stops, it will move in small increments just like a clock.
The only thing I cant see to check is the bottom of the manifold for a small crack, but im not sure if that would do that.
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did you see it spin before during an idle?
larger turbos don't always spin, especially when exhaust gases are lower temperature, such as at idle
Yeah you are okay, I ran into the same situation before. But larger turbos do not always spin at idle.
huh. Thats just weird. It used to spin pretty fast. I dont know... The first time it stopped spinning the car started to burn oil and you could see it comming from the exhaust pipe (blue smoke). Might be totally unrelated.
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If you are burning oil at idle (only idle) and are seeing smoke at idle and when you accelerate from a dead stop, it could be related to a failing oil seal (not a pain to replace though)
your turbo is broken, take it out and rebuild it, mine just did the same thing and im rebuilding it as we speak, all turbos do spin and when they don't they are broken. Turbos are design to do one thing spin, the only time a 4cylinder wont spin a turbo is when the turbo is like .100 trim,, BIG BIG turbo. Mine is a t3/t4 A/R .70 trim .63 exduser and my car at 600 rpms it spins it just fine.
http://a709.ac-images.myspacecdn.com/images01/85/l_c45bfa9c54e0aebaf0fbf6bf67c30a74.jpg
Must be a failing oil seal. Its just weird that it doesnt really want to spin at an idle... and sometimes will. Expecially when it is already hot. Oil viscoisty have anything to do with it?
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see whats goin on with your turbo is that the bearings are already worndown and the shaft in the turbo its going out of balance, as exhaust gases go thrue the turbo and push on the exduser putting pressure on the shaft making it tilt a little and creats alot of friction thats why you only build boost at WOT and the at idle the turbo stops because like i said there is only getting air from the exhaust pushing the shaft against the worndown bearing. Stop drinving the car and fix the turbo before you cant and have to buy a newone. They are easy to rebuild.
http://a709.ac-images.myspacecdn.com/images01/85/l_c45bfa9c54e0aebaf0fbf6bf67c30a74.jpg
I would agree. It is much easier to rebuild it now, and fix the bearings. Compared to when the blade explodes in the compressor or exhaust housing wheel, and now you have debris everywhere, and need to buy a new turbo because the old one is f&$%ed up.
