Please Help car turns off with a/c

[boostedtsi0069]

Hey guys i have 91 tsi fwd with stage 0 mods. Well my problem is that when im driving and i have the a/c on it dies. Example, im driving normal and theres a stop up ahead i put it to neutral and the rpms go down but instead of stoppin at 800 rpms they go all the way down and car turns off? What can this be. And only with the a/c on w/o it sometimes they go down a lil less but then go back up. I tried adjusting the idle but for it to not turn off with the a/c on it would have to idle at 1500 rpms.

 

[steve]

Please check your ISC, IPS, and ECU. All are involved in maintaining the idle speed.

Steve

 

[Rippinstock]

I would look into you ecu. Get one and if it works great, and if it doesnt you can always sell it.