thanks guys for responding. i have noticed my SC has a strange cold start scenario, it acts like it doesn't want to initially rev up when it fires up. i thought normally an sc would rev to 2k, then immediately settle back down to 900 rpms or so while in open loop (cold engine mode). but mine doesn't rev up hardly at all- it quickly stumbles to 1,200 rpm then immediately settles to 600-700 rpm, cold. that doesn't sound normal to me, but it does idle smoothly to my surprise warm or cold. i will check the iac, but i'm also thinking the tps voltage may be set a little low- i did install a new tps (not ford) from advance auto. manurfacturing tolerances may be off.
it could also be the engine coolant temp sensor- does anyone know what the resistance range is supposed to be for the ect sensor?
i'll let you guys know what i find out.