Turbo/Boost Issues?

[msp2003.5]

Ok, I really need some help. Im new here and I havent really gotten pictures of my car yet, but thats not important. Wat is important hear is that on my car im not building boost till almost redline. I can only hit about 3 pounds at redline in first but in second i can hit the 5.5 pounds at 4500 rpms. I dont understand what this could be? Ive checked all my vaccum lines and the only leak i can find is the one where my boost gauge hooks up to the BPV vaccum line. But the so small i wouldnt think it would affect the much of a boost variation. Does anyone have any ideas?

 

[Metal MP5]

any leak can affect boost like that. try to fix it and check your boost again.

also inspect every plastic tubes (if you kept the original intake / intercooler piping) for cracks

 

[msp2003.5]

any leak can affect boost like that. try to fix it and check your boost again.

also inspect every plastic tubes (if you kept the original intake / intercooler piping) for cracks

the charge pipes are fine. But ever since this has happened the turbo is making the worst sound ever. it sounds like a mouse screaming or something of that nature....Really loudly!

 

[Metal MP5]

there has been a few blown turbos here and there. is your car still under warranty?

 

[msp2003.5]

yes, im going to see if the dealership will replace the turbo for me. I didnt know if it would be n e thing else though?

 

[MSpeed2397]

I believe that you're having the same problem I am (turbo on it's way out/already there). I would check the oil feed line and the gasket surrounding it. Also check the charge pipes for oil. My turbo is blowing oil into my charge pipes, and I believe that is why the third cylinder piston has oil sitting on top of it...either that or a bad piston ring. But anyways...check that oil feed line gasket as you may be burning massive quantities of oil. Check your oil as often as you can too...

 

[msp2003.5]

i just put mobil one synthetic in it 2 weeks ago and the level is the same. Should i pull the head off to check for oil?

 

[Bakum]

Sounds like a Busted Turbo, but then again if your leaking anywhere it would cause a boost drop. Even the smallest leak can screw up your whole setup.

 

[blthlt]

may be a faulty wastegate actuator too.

 

[Metal MP5]

faulty actuator would result is more boost

 

[msp2003.5]

may be a faulty wastegate actuator too.

ive already had that replaced....i would spike WAY above stock fuel cut-off so i got that replaced, but that was 3 months ago

 

[blthlt]

not if it were to be somewhat stuck open, like mine did and had to be replaced.

 

[msp2003.5]

Sounds like a Busted Turbo, but then again if your leaking anywhere it would cause a boost drop. Even the smallest leak can screw up your whole setup.

but would it be leaking all 5.5 pounds?

 

[msp2003.5]

not if it were to be somewhat stuck open, like mine did and had to be replaced.

mine would open really late, the actual acutator wouldnt pull

 

[orng1]

faulty actuator would result is more boost

A bad actuator in my car left the wastegate open or not able to close fully and that meant slow spooling and real low boost.

 

[jestermsp]

Ok, I really need some help. Im new here and I havent really gotten pictures of my car yet, but thats not important. Wat is important hear is that on my car im not building boost till almost redline. I can only hit about 3 pounds at redline in first but in second i can hit the 5.5 pounds at 4500 rpms. I dont understand what this could be? Ive checked all my vaccum lines and the only leak i can find is the one where my boost gauge hooks up to the BPV vaccum line. But the so small i wouldnt think it would affect the much of a boost variation. Does anyone have any ideas?

my car does the exact same thing. always thought it was normal. then again my motor is blown what do i know.

 

[Drumfreak]

A bad actuator in my car left the wastegate open or not able to close fully and that meant slow spooling and real low boost.

Same exact thing happened to me and I had that whistling noise as well. The dealership didn't back me up with my warranty so i removed the turbo assembly and did a little modifying so the wastegate would fully close and not stick partially open. I also installed the atp 6 psi wga. Put the turbo back in and the car was as good as new. If you don't have a huge spike your wga is probably ok and it's just your wastegate acting up but if you are going to fix it yourself put in a new wga just in case. But before any of that double and triple check all your hoses and clamps again.

 

[msp2003.5]

im starting to catch on to the fact that these cars are pieces unless u do alot of work ur self.....lol

 

[jestermsp]

lol you havent even scratched the surface.

 

[Bakum]

lol you havent even scratched the surface.

Get used to it my friend, this is only the beginning. If you knew nothing about cars before you will quickly learn on your MSP