I was wondering if anyone found a way to fix the stalling problems on the Evo when in first gear and inching up to a stop light or going through a drive through? I was told it is because of the aftermarket MAF pipe. I have a HKS super suction intake, a Perrin MBC, and an AFC II installed. I checked all of the hoses and they are all good. I also played with the AFC II and tried both adding (from +1to+3) and subtracting (from -1 to -3) some fuel at idle up to 1500 rpm without stopping the car from stalling. It runs fine at idle but stalls out when I inch forward and then push in the clutch to stop. If anyone knows of a way to fix this without putting the stock MAF pipe back on and wasting the $300 on the suction kit that would be great.
Thanks!

 

yep...i have the same problem.....buschur responded to a similar post and said to add fuel down low.....
i have a safc 11 and i have done everything .....adding, taking away.....it helped to add about 12% fuel at 1800 rpms, and about 8% at 2400 rpms.....still stalls at around 2k if the clutch isnt let out all the way and then pressed in.....not as bad, but still does it....
stalls like a champ with the a/c or defrost on....
if u find a solution, post it.....we cant be the only ones experiencing this.

 

I have the same thing....

 

I have the Aem Short ram and my car does the same things, when creeping it stalls out, it is very annoying any help would be greatly appreciated.

 

That occasionally happens on stock cars too.. I found I had to reset the ECU and let it relearn the fuel trims.. it helps, but might not solve it completely.. you actually may have a minor vacuum leak still.. but unlikely.. Adding fuel helps a little but you have to leave the settings for a while to be certain that it works (can take 2 or 3 days for the ECU to adjust a bit)

 

I had the same problem. After I installed my grounding kit the problem went away. It's an electrical system problem...that's why running all the accessories seems to aggravate it. Mine would stumble almost once a week in the summer. Since I've installed the grounding kit it's only happened once in the last year.

 

come on, man......i responded to the grounding kit issue under its own post.....
my car never did it stock till we put the intake on it. it has to do with fuel/air mixturte and how the maf is reading it.....the bigger intakes throws the maf off...
i have a grounding kit..i think i may have bought it from you and thats fine, im sure they dont hurt anything but it did NOTHING for me.....real or imagined. some of u guys think these grounding kits are like some kind of magic elixir.....
please dont try to tell someone a grounding kit will cure problems that are totally unrelated to grounding kits....

 

by the way....its NOT an electrical system problem......running the accessories like a/c puts a greater load on the engine, thus its more willing to die out if it already has a propensity to do so....its the load on the engine, not the load on the electrical system that contributes to the problem.

 

I'm speaking from my own experience. My car is totally stock exept for the grounding kit. That is the only thing that can explain why the idle problem went away. Now, maybe your problem is the intake but someone above said that the problem was worse with A/C on...well mine did the same thing. The A/C is not going to change a MAF problem.

Ohhh and please don't think I'm trying to push my grounding kits. I'm simply stating what happened with my car.

 

no thats cool dude.....i didnt really say that...if thats the perception, im sorry. some people think grounding kits cure everything and thats about all i meant to accuse u of..
some people say their idle improves, but this stalling issue really isnt at idle, its actually off idle stalling issue....
by the way, ur grounding kit IS very nice.

 

No problem. Yeah, it's not really an idle problem but a problem when inching forward, putting in the clutch, and letting the rpms come down to the idle. Sometimes the rpms fall too far (500 or less) and sometimes the rpms hold. It's pretty random and at it's impossible to reproduce. I talked with a Mitsu tech about it and he told me the problem is that the alternator is too small to run the accessories. I don't know if he's right or not but in my case I tried the grounding kit and it worked.

I do still notice the points when the idle would drop to 500 or less but the engine seems to recover before that point.

Did you guys have the same problem before installing the intakes? For me it would happen all the time on a really hot day (100+), A/C at 4 with recirc on, and going through a drive through.

 

ah, couldnt tell you about hot days....i bought my car in january and i live in chicago. but i would run the defrost a lot which runs the compressor, so thats kinda the same thing....
while the car was stock, i never had a problem with it dying out or anything....when the intake went on is when it started.....i would put the stock intake back on, but i think it would have to be retuned and stuff....

 

Thanks for responding guys. I added some more fuel up to 2200rpms with AFCII with no stalls today yet. I'm getting an oil change at the mitsu. dealer next week and the Evo tech there said he would take a look at it. I'll ask about the alternatior being too small to run all fo the accessories and if the grounding kit would really make a difference. I'll get back to you in a week or so. By the way, I asked the mitsu. dealer if they could fix the annoying passenger side dash rattle and they said that those rattles aren't covered under the warranty for the Evo VIII because of the stiff chassis, however they will fix the B pillar rattle. Has anyone heard of this from their dealer?
Thanks!

 

I had the same issue. My mods were Cat-back, MBC, and SAFC2. My SAFC2 was zeroed out. With everything installed, my car would almost stall when inching up at a light or going up a driveway with the AC on. I've pulled the SAFC out and the issue no longer exists. I wonder if it's because of the Field harness... maybe the extra length of wires is causing some sort of false signal to the ECU. Who knows... to be honest, I don't want to deal with it.

 

Actually bad grounding or poor connections on the S-AFC to the field harness are the classic reason for the MAF to read incorrectly..

However, before you guys go too crazy.. I remembered something that contributed to my car periodically stalling.. Fouled plugs.. have you changed the plugs and do you have over 5000 miles on the car? Thats another possibility.