||Ground ALDL diagnostic lead (short the top two rightmost pins in the ALDL connector).
||Turn on the ignition (but don't start the car).
||Wait 30 seconds.
||Leave ignition on and disconnect the IAC connector.
||Remove the grounding from the ALDL connector.
||Start the car. The car will probably run rough and may stall. Just restart and try again.
||Adjust the throttle stop screw to set the idle to 500 RPM +/- 50 RPM.
||Turn the car off and reconnect the IAC connector.
||Turn ignition on and adjust TPS to proper settings. (.42-.44 at idle is typical)
||Repeat procedure until the 500 RPM +/- 50 RPM in step 7 can be maintained while TPS is at proper idle setting.