My BOV is causing my car to stall!

[Little Beavis]

My car started to stall when I put in the clutch just a few days ago. I've been losing sleeping and getting pretty cranky. The car pulls 22 in-Hg at idle. So, I figured I didn't have a vacuum leak. Most frustrating.

Tonight, for "fun" I disconnected the BOV and it seems to be fine. I didn't drive it, but I'm 99% sure it is the BOV.

I can let the car idle, then rev it up and it stalls dead. With the BOV disconnected I can rev it up and it returns right to where it needs to be.

What's going on? And what can I do about it. I realize I can drive without a BOV, but it doesn't seem like the smart thing to do. Any suggestions? It is a Greddy Type S.

 

[KzA]

Im not a turbo genius by far...but most of the time when that happens it is becuase the person needs a recirculating BOV..maybe your setup requires this?

 

[LinuxRacr]

IF anyone will have the answer to this one, its Terry.

 

[Little Beavis]

So where's Terry when you need him?

Now, I've learned a lot from you, Linux, I was truly hoping you'd solve it. :'(

This thing has been killing me. . .and I feel like I'm so close, but yet so far now.

 

[boostisgood]

It is irractic Idle and stall when shifting. Its an issue on hot-wired air flow metered cars with an atmospheric BOV. An Apexi S-afc will cure this. Also The Greddy E-manage will.

I got a msp, and plan to upgrade to Terry's FMIC,with the hard piping, when he gets it done. I just ordered my S-AFC for $350.00 from my local shop, to eliminate this from the go.

hope that helps Beavis.

 

[Little Beavis]

Actually it idles just fine. That's what I couldnt' figure out. If you start it up, it holds steady, but once the revs climb it crashes right down to zero (sometimes it catches itself). If I put in the clutch and use the gas to hold it at about 1000 rpm, it will level off and be fine when I stop, but if I just put in the clutch and leave the gas alone, I'm almost guaranteed to have to it stall.

 

[spoolinmp3]

Its not the BOV unless its defective, we have over 10+ cars running the greddy type-s setup. First reset the ecu then Try making sure that all your I/C pipes are on. Use a soapy spray solution on it and see if you get any bubbles. A leak the size of a pin hole will cause this.
Also check the egr valve (this has happened often) and make sure that has a full seal on that. Also tighten up the valve all the way and see what happens. I remember deepcover6 had a problem as well with his BOV. I think his diaphram was defective, but this is rare. Try shooting him a PM and see what he did. I remember he said something about getting a reaplacement diaphram from greddy...but this is last resort.
You will not need to run recirculating. I have a type-s on my personal car for over a year with no issues.

 

[Little Beavis]

The car is fine if I disconnect the BOV. So the leak must be tied in with that. I think all the other pipes are fine. Otherwise why would it work when the BOV is disconnected?

At one point I had it hooked up with the intake to the big nipple and the compressor to the little one as that is supposed to make it respond quicker by using the higher pressure in the compressor to open the valve. Every since, then I've had problems, but I have removed this line with no luck either.

The EGR could be something. I doubt it, but I'll check it. I installed a plug in the fitting by the TB rather trying to seal up the end that went to the cat.

It could still be a leak even with 22 in-Hg at idle? I figured that was good, but what do I know. . .(not much about turbos, that's for sure).

 

[chdesign]

OH yeah boostisgood an S-AFC will not work in teh protege so you might as well return that unit. Do a search and you will find many topics on this.

 

[boostisgood]

chdesign, its the masdaspeed, not a pro5 or mp3, dunno if it is closed loop at WOT or not, but will find out

 

[mikesmazda155]

My car started to stall when I put in the clutch just a few days ago. I've been losing sleeping and getting pretty cranky. The car pulls 22 in-Hg at idle. So, I figured I didn't have a vacuum leak. Most frustrating.

I can let the car idle, then rev it up and it stalls dead. With the BOV disconnected I can rev it up and it returns right to where it needs to be.

That is the same problem with mine. I have the Turbo xs RFL. I guess my BOV could be bad.