Can't get this thing to idle

[teddy]

Having some problems with the CA. This is the first time I've run the car in over a year. I can't get it to idle at all. If I let off the gas, the rev's will just fall off and die. This is all in neutral. I've tried adjusting the idle screw to no avail. Maf is functioning fine, and is placed far enough away from the turbo. I am running an open downpipe and am backfiring if I rev it up, so I'm wondering if it's running rich. Here's the modst3/t04efmicstock maflightweight flywheelhks filter255 fuel pumpstock injectorse-manage

Now I know the t3 is going to suck in a lot more air than the stock t25, but I didn't think it'd be much more at idle. Still running on the stock fuel maps, and stock fpr, but if there was too much air, this would contradict the backfiring.

I know the timing belt is on correct, and I've toyed with the cas a little, but doens't make a difference. I am also runnign a vented bov, but didn't think that would affect the car drastically at idle. Here's the kicker. The car runs great other than dying when I let off the gas. It starts right up, doesn't run rough, doesn't leak anything and isn't smoking. It ran great last summer too, and idled, but I wasn't putting boost through it. I can also rev freely. It has some year old gas in it, but I put stabilizer in it last year, and just added 2 gallons of 93 with some seafoam to it.

So, any ideas?

[mbmbmb23]

Give us some details on your e-manage configuration. Also, if you are running a vented BOV and walbro (with no upgraded FPR) then I can see why it would backfire....maybe too much fuel is killing the idle.

-m

(p.s. Which HS did you go to in Elkhart?)

[teddy]

Give us some details on your e-manage configuration. Also, if you are running a vented BOV and walbro (with no upgraded FPR) then I can see why it would backfire....maybe too much fuel is killing the idle.

One of my thoughts was the fpr. But I've only had the car running maybe a grand total of 15 minutes since this new configuration, and the fuel pump is new. Could it blow out a fpr in such a short amount of time? E-manage maps are completely stock. I wanted it to leave it like that and get the car running well at low boost on stock fuel before I upgraded.

I went to Concord High school, but I also used to go to Elkhart Community schools too.

[mbmbmb23]

One of my thoughts was the fpr. But I've only had the car running maybe a grand total of 15 minutes since this new configuration, and the fuel pump is new. Could it blow out a fpr in such a short amount of time? E-manage maps are completely stock. I wanted it to leave it like that and get the car running well at low boost on stock fuel before I upgraded.

I went to Concord High school, but I also used to go to Elkhart Community schools too.

The reason people upgrade the FPR is to turn the fuel pressure down...the walbro is pressurizing the fuel system more than the computer realizes making it run richer than normal. Venting the BOV makes it run richer also for a split second (when you let off the gas) so, you have 2 things adding to the rich conditions.

If it were me I would get a Nismo FPR to turn the fuel pressure down then track down some emanage maps that work with your mods. If you cant track down any maps then I would contact a local tuner shop who is emanage certified and see if they can help you set it up for your mods.

Have you checked all your vacuum lines for leaks?

-m

p.s. I went to CHS also....class of 95 though. What year were you? What are you studying at BSU?

[teddy]

Right, I understand the whole fpr deal, and have been toying with the e-manage for a while. I used the anti-stall earlier to clamp the maf voltage for anything under 1200 rpms hoping that would help prevent the stalling. Then I found out I didn't have the tps wire on the e-manage hooked up(oops), so I'm going to do that tomorrow and see if that helps clear some things up.

I guess I was going to have to buy the fpr sooner or later, I was just hoping it would be later. I didn't think that the walbro would flow that much more at idle, or enough to stall out the car.

[teddy]

p.s. I went to CHS also....class of 95 though. What year were you? What are you studying at BSU?

forgot to add that there are no vacuum leaks. I'm using cheap worm clamps for the time being on the couplers, but they don't seem to be leaking. Most of my piping is welded.

And holy crap you went to CHS ! This is quite the weird coincidence. I graduated in 03, so kinda close to you I'm studying business information systems, and am a senior now.

I knew quite a few people who graduated in the mid 90's. Know Ian Torres or Scott Lawrence? And how'd you wind up all the way in charlotte?

[mbmbmb23]

And holy crap you went to CHS ! This is quite the weird coincidence. I graduated in 03, so kinda close to you I'm studying business information systems, and am a senior now.

I knew quite a few people who graduated in the mid 90's. Know Ian Torres or Scott Lawrence? And how'd you wind up all the way in charlotte?

Yeah, Ian's locker was directly to the left of mine since 7th grade...we rode the bus together since elementary (West Side). I know Scott too. I ended up here because my dad lives here and I wanted to try something other than Elkhart after college (IU).

-Matt (Tolen)

[teddy]

Any relation to Travis Tolen?

[mbmbmb23]

Yeah...thats my youngest brother (and BSU student currently)

-m

[teddy]

Thought so. I know travis. He's a cool kid

[teddy]

Ok...back again and needing help. Bought an adjustable fpr, set the pressure, timed the car, cleaned and checked the iacv and that aic weird gray box underneath the throttle body...and all checked out fine. The car still won't idle worth crap. It just dies. There aren't any vacuum leaks, I triple checked all of that.

But, what I found out tonight is if I unplug my maf, the car idles like a dream sitting around 850rpm. But when it's plugged in, the car dies. All this would obviously point to a bad maf, but when the maf is plugged in, I'm able to rev freely up to 5000 and so on. I'm also monitoring maf input and output voltage in real time through my emanage and all is good there too. I'm still on the stock CA maf also.

So...anyone have any ideas?

[Trigger]

sounds like a bad maf the ka one will work with a little rewiring. change that out and let us know if that helps.

Tim

[dattodude]

- Pull the idle control solenoid connector, and see what the idle is doing.If the idle is too low, raise it using hex adjuster on plenum until it is 800rpm +-50rpm. The idle control solenoid should only be working under unusual idle/load conditions.

- Check for vaccuum leaks in-between MAF and throttlebody.

[teddy]

Idle control connector doesn't do anything while the maf is plugged in. Regardless of where I've got the idle screw set at, the car dies. When the maf unplugged, I can adjust the idle.

I've checked for leaks so many times and can't find anything. Almost all of my i/c piping is welded, and I have all new silicone vacuum hoses. I've used rtv on the throttle body gasket, and intake manifold gaskets just to make sure they're sealed properly.

I'm going to borrow a friends maf and see if that makes any difference. I don't know if mine is dirty or shot, but I know the wiring is a ok. I may also try some different maf settings in the emanage and see if that makes a difference.