Hi guys, im new to the evo and just started work on it. There seems to be a problem with boost as the boost gauge is showing no boost pressure, we checked all the wiring and everything seemed to be fine, then we checked the mbc and there is no boost pressure in the line before or after the mbc. We are thinking it is the wastegate and its stuck open, i read on here that it could be the wastegate selnoid (sp) which causes the wastegate to remain open.

We took the car out for a spin and everything seems to work fine and it runs strong but no boost pressure from the wastegate out....




any ideas what it could be?? Thanks

 

runs fine with no boost? or is the guage not reading?
it is reading vaccum still right?

 

no the turbo is working, but we are not getting a reading to the boost gauge or any pressure to the mbc

 

what line do you have your boost gauge tapped into? And as mentioned above does it still read vaccum

 

boost gauge is hooked up after the mbc, but i get no pressure to the mbc either way

 

Does it read vaccum??????????

 

If the car was not boosting it would run like ****.

 

what do you mean exactly? sorry im a noob, the car is boosting but im thinking its not boosting full pressure

 

On the meter you will see it boost, or if it is the gauge pod from mitsu (or most other boost gauges) if the arrow points down, that will show the vacuum pressure in the intake lines. The whole point to see if it is registering the vacuum pressure is if it is just the pod, or a problem with the WGA.

 

the boost gauge shows no pressure and doesn't move

 

It was a bad gauge, but we are boosting about 10psi right now