Re: Trying to still fix the IDLE on the SR20det
Checking the O2 sensor involves warming up the car like reuter said then putting the ECU into Diagnostic Test Mode II which varies from ECU to ECU. Probably invovles turning a screw on the ECU for the S13 motors (I don't know on S13 ECUs how to switch modes). Then just counting the blinks.
Check the wiring first though. No sense in doing all that if the wiring is bad.
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Got a 1995-1996 240SX? Want a new front bumper?
Check this out. Posting on drag first to try and avoid shipping it.