set the idle screw on the IAC to 1200 rpm cold.
I set mine hot, because I cant stand the factory setting of 1200
I get mine fully warm and set the this screw 5mm allen key so engine runs the slowest hot and smoothest. Then when cold it isnt crazy fast.
ymmv
click>>>
http://carfix.stufftoread.com/TBI-1w.jpg
the colder the car is , the faster the idle when cold this is controled by a wax pellet in side the IAC, and we can not change that relationship.
it is a thermo mechanical device, and there is one other device inside the IAC, and that is the device that the ECU uses to control the idle when warm only.
That is the purpose of the 2 wire connection.
