rpms drop off once engine is warm

[DC_T]

thanks guys, i'll check the TPS voltage tomorrow. Last night i unplugged the IACV with the car at operating temp and adjusted the idle as low as i could get it, which was around 750 with the screw all the way in. i shut the car off, plugged the IACV back in, and fired it back up, but that didn't do anything. I will try again tomorrow and check the TPS voltage.