Well, in my SI i swapped in another Z6 from a car that was wrecked but before that it had the typical up and down rpm honda idle. well my friend previously owned the car and he changed the TPS and put a new TB gasket on. welll after swaping the motor today i ran it to see if it would still do it....and it did. so i took the IAC off my good Z6 that idled perfectly and put it on the other motor, it didnt change anything really.

the previous owner used to work for a local honda dealership/service station and he bled the coolant system and it wouldnt go away. does anyone seem to think i have something wrong with the wires or do i need to reset the battery? or could it be some other sensor? at times it will idle high about 2-3k untill i hit the throtle then itll go away. i fooled with the plug-in on the IAC and it seemed to change it a little but not fix it. if anyone can help id greatly appreciate it!