Hi I'm new to forum, I have a issue that has been talked about alot but still stumped. I have a 1994 gt 5.0, I recently put a e303 cam in, trick flo upper and lower intake, 75mm bbk throttle body, and deleted smog pump. The issue is when the car is cold everything works perfect, once it reaches normal temperature it has a problem idling down during shifts the rpms just hang there for about 3 seconds then finally falls. I replaced the iac but nothing, if I unhook the iac the car runs like it should, but once I shut if off I have to hook the iac back up to start it. I've also cleaned the mass air but haven't replaced it yet. I read that there is no way to adjust the tps on the 94s so I'm at a loss here. Also checked all vacuum lines and made sure there was no leaks in intake gaskets.