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11-04-2008
I have a 1998 gtp with a smaller sc pulley, when I get on the car, I get full boost. After a few minutes of driving I only get half the amount, seems like this happens when the car get to normal operating temp. Anyone have any idea why this would happen?
11-04-2008
How do you know that you are only getting half boost? I hope your not basing your questions on the boost gauge the car comes with. Let us know!!
11-10-2008
yep i tested it out, only getting half boost. the gauge is correct. you can feel the difference also. not as powerful after you drive it for a while. any ideas?
11-10-2008
It's possible your belt could be loose due to either being old and stretched out or your tensioner is not keeping sufficient tension. Or it could be you BBV. Those are a couple simple things to look at.
11-11-2008
The belt is new, and the tens is also new. What do i have to look at on the bbv?
11-11-2008
Pull the lower vac line off and see if you get full boost
11-12-2008
ok will do.
12-11-2008
did everything, still the same thing is happening. any other ideas anyone??
11-02-2012
hi i have same problem, i pulled my lower vac line like you said and i got full boost on stock gauge connected it back and went back to half boost my question is where do i go from here? replace bbv? replace solenoid? or both? thanks any help really apreciated im new to the gtp scene
11-05-2012
Lower line means bad solenoid. Upper line means bbv actuator.
11-05-2012
Question is...why are you going into boost when you're not at operating temperature in the first place?
11-05-2012
@98gtpblack why you resurrecting 4 year old post?
@AjL227 read above I doubt the op is even around anymore.
Originally Posted by The Sunfire Guy
11-17-2012
why is an unanswered post from 4 years ago still here???
11-17-2012
because p(gh)ost from the dead.
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