I finally figured it out!!!!!!! i am soooooooooo happy haaaaaaaa, its the one way check valve that needs to be replaced!! ok now i need a pic of this one way check valve so i can take it out and replace it, thanks guys, oh by the way do i have to remove the manifold to replace this one way check valve?

 

Ok, if you haven't removed it yet, how do you know that it's exactly the problem?

You might be able to get to it without removing the UIM if you know what you are feeling for and if your hands are small enough.

Usually though the vacuum lines on the back side (firewall side) are pretty short, so you will most likely need to pull the UIM to remove it and install the a new one properly.

 

how do i know that this is the problem? simple i am having the exact symptoms of a bad check valve, you see when i boost i have to build 20 hg in vacuum before i can get normal boost, that even when i am at higher rpms, lets take for example i am at 4500 and i give it gas i wont get boost, if i wait and build my vaccum at 20hg then mash the pedal i get the whooping 10 pounds!!! now that to me sounds like a bad check valve!

 

bump

 

great!! could you let us know if this really was the fix. if so, I'll keep this in mind next time I'm having these symtoms

 

What the heck are you bumping this for? Fix it...

 

I know i'm old, but ............
What the hell does bump mean?

Jim

 

What do you do when your in bed with your wife or g/f?Bump

 

Is that the sound of the headboard?

 

That one was too hard to resist.

 

Scrub,
i was in Delaware this weekend. I was on the Bethany Beach strip. That place has more Corvettes per square mile than anyplace in the world. They were like cockroaches. They were from every time period too. Very strange. If it wasn't a Vette, it was a done up VW. They were messing with the Vettes. From what I saw, that was a big mistake.
They all got pulled over too. the cops looked like they were really rough on people with done up rides.
Next time, i'll bring my car.

 

lol, yeah you should and show them all up. There probally was a car show or something, but there are a lot of people with money down around there. They all got what they deserved anyway. Next time you come to DE let us know. Thats a far drive for a 7 though.

 

That is a far drive, but I drive to KD in PA. from MA. all the time, so i'm used to it. I'll let you know when I come down again.
I gotta go home now(i'm at work).

Peace
Jim

 

cool, maybe i can get a cruise together.
Later,
Dan

 

Interesting...I have had the same problem for the past few weeks. When I'm crusing at 4k-5k, giving it gas usually does nothing to boost which is why I've restrained from some challenges. On the other hand, at times I get awesome boost, just needs momentum. Maybe that's it...will find out soon I hope.

 

Ok, and now do you know which check valve it is?