Help! I've researched this extensively online and with factory shop manual (printed in Pharmese!). Bone stock 85 GSL-SE with 65,000 miles. No driveabilty issues whatsoever until I hit the little A.C. button (I live in Phoenix, after all!) Then idle drops to 500. BAC soleniod works fine...it's clean. Opens with battery current applied...idles at 1,00 rpm with BAC open and AC on. Suspect it's not getting signal from AC relay? Haven't fiddled with any adjustments yet. Don't want to create more issues. Any ideas where I should go from here? Sorry I replied to another post...don't want to jack a thread, so please disregard. Thanks!