'86 IROC 305 TPI. I had a problem with the Idle speed, way too high at times and sometimes it would be normal (well, 1000 RPM in Drive, so not quite normal I guess)I just replaced the IAC, fuel filter, plugs, wires, rotor and cap. I had the TPS checked and it was fine. So when it warms up to about 200-220, It starts to choke out on me when I apply light pressure to gas pedal from a stop. This is driving me completely insane. It runs fine once I get going but when it warms up it always sputters from that stopped position. It also still idles way to high, like 1500-2000 RPM. Any sugestions on what to check next. I've visually inspected all the vacum lines I can see and found no problems. Also note that I have an exhaust leak that I havent fixed yet but I dont think that would be causing this. maybe Im wrong? thx in advance for any replies