HyeRX7

I just finished with a vacuum job on my 94, changed gaskets, new radiator and it is'nt boosting at all. need some suggestions on what problem is. idle is solid 900.
engine doesnt sputter. the whole reason i did the vacuum job was to solve the boost problem i have. now the problem is still present any suggestions will help, thank you. (yes i have a boost gauge)

P.S. my bro said it could be the wastegate stuck open,
is there anyway to bypass wastegate.

HyeRX7

Oh yes and another thing, i couldnt find my vacuum chamber so i plugged where it should be.

CantGoStraight

The waste gate being stuck open could be part of it. Why don't you have a vacuum chamber ? I believe you need it. Doesn't do much good to change all the hoses if you don't know what the problem is, if it wasn't a hose problem to begin with. Since you have a boost gauge what is your primary boosting to ? If you don't have at least 7psi. on the primary you won't have any boost on the secondary. Have you done any reading on how this system works ? If you don't have an idea of what to look for then suggestions won't get you very far.

HyeRX7

My primary is'nt boosting, im running all engine right now, i was just hoping for a quick answer or suggestion to look the right way. if wastegate is part of problem, what other underlying problems could there be. is it possible some of my solenoids are not working causing the problem? Thx for your reply and help bro.

dgeesaman

iTrader: (7)

Without a vacuum chamber your solenoids won't function.

The vacuum chamber is tucked underneath/between the power steering pump and alternator. Get it connected.

Dave

rynberg

1. You actually asked if you could bypass the wastegate.
+
2. You couldn't find the vacuum chamber so you plugged it?
=
take your car to someone who knows what they are doing and let them fix it.

HyeRX7

I couldnt find the vacuum chamber box, which is like the pressure chamber, so i plugged the hose which suppose to connect to it. .

rynberg

We understood what you did the first time you said it. You can't just plug stuff and then wonder why it doesn't work!!!

Like I said above, take the car to someone who can and will fix it properly.

Sr20fd3st

even if the wastegate was stuck open, wouldnt you still be able to hit 7 psi of boost, atleast if you gave it WOT in like 3rd gear so it could have time to build? the wastegate doesnt bypass all the exhaust

Sr20fd3st

you just eliminated the vac chamber? christ...

dgeesaman

iTrader: (7)

If the wastegate was stuck open (very unlikely) or the connecting rod popped off the wg valve arm (somewhat possible) then you'd have no boost. All the flow would bypass the turbos.

The 7-8 psi deal is when the wastegate is running without a boost controller. Then the wg spring regulates boost to 7-8psi.

Dave

HyeRX7

if i can find some time to spend at the mechanic why not, until then im going to try to do it myself thx for all your help.

HyeRX7

guys thx for answerin my newb questions i appreciate it a lot, not the brightest guy here but i could get the job done.

HyeRX7

i looked again and now i can see why i coudldnt find it... the nipple is completely missing... thx a lot bro.

rynberg

Well, if you're going to work on it yourself....do it right. Don't cut corners because you run into a tough spot. There are nice color big-size vacuum diagrams as well as the factory service manual you can download for free. No excuse for not doing things right. If you get stuck, put a picture up here and we'll help.

dgeesaman

iTrader: (7)

The good news is you can get a vac chamber for just a few bucks from the classifieds.

The not-so-good news is that changing the vacuum chamber involves removing a good amount of stuff.

Dave

Sr20fd3st

tehn again teh vac chamber has only one hose going to it. if you want to test a different chamber before installing it just to be sure, you can always just route the hose up the the new chamber and set it somewhere easy to access. I mean..u can use just about any chamber that will hold vacuum and has about the same volume.