You need to adjust the AC ISC steps and that's it

These tables here in the attached picture. You only need to adjust just a few steps- nothing major at all and it should do the trick!

 

I made an adjustment to the ISCV Demand RPM Adder table, i'll see if it has any effect this morning. The table was zero'd out.

I have made adjustments to the table mentioned about. The step position isnt really the issue in my case, atleast i dont think so. Its more of a lack of fuel for rpm recovery. When playing with one of the Coolant adder tables for a cold start issue, i bumped it up too much. Car ran in the 12.5's for idle and cruise. Not good. But idle recovery was perfect. So that leads me to it being a fuel issue as the rpms come down.

 

Has anyone come up with a correction for this problem? I am in the same boat. Stock 2.0, GSC S2, MAF, Recirculated valve, 1100cc FIC, and E85.
Dan

 

Has anyone figured this issue out. My Evo 9 mr also shuts off. Is a new iac needed or is the issue in the tune. I am so frustrated and don't want to drive it on hot days.

 

Add some timing in the 70-100 load cells and in the 500- 3000 rpm cells then smooth it. Also bump up the iscv ac on cells by 15%

 

I'm in the same boat with same mods, I have tried lots of different things with no success. Please post back here if you ever find a cure.

It's especially bad for me when I am braking and turning at slow speed like pulling into a driveway. The load from the A/C and the vacuum of the brakes seems to kill the engine almost every time.

 

Seems like every person who has experienced this issue just opens the window. I am going to try getting an eclipse iac valve and hopefully that solves the problem. At a junkyard. Gen 3 eclipse iacv

 

So I installed the new iac valve and it seems to have solved the issue this far. However it's just humid. No sun. Also it's not as hot. Ill report back

 

So the new iac didn't work. The engine cut off on me three times now. Now my next guess is to go to my tuner and set the idle higher for AC 1 and 2

 

i have the same issue...and being in Az sometimes its hard to just "open the window". Here are all the steps i took.

1. Had tuner look at it...did what he could, car still stalled
2. Replaced IAC with cheap one from amazon..car still stalled
3. Fixed leaks on TB and BOV, car still stalled.

I am on SD, have Kelford 272s, 1450 injectors, CBRD BBK-BB turbo, small battery kit, etc.

I am starting to think that the small battery just sucks. Because the car almost stalls when I try to close or open all the windows at the same time. It seems the additional electrical draw from the fan puts the car over the edge and it just falls on its face. I was thinking for just going to buy a regular battery this weekend, install it, troubleshoot the problem. If it doesnt fix it, I would just return the battery.

After this I am out of ideas...

 

What did your tuner change. Which settings and at what idle? Please let us know if replacing the battery helped.

 

I will ask him this weekend. I have to get the car tuned again anyways.

I will let you know about the battery