# try putting the car in diag mode II.. -->

Posted by Matt (93SE) on September 09, 2004 at 12:11:28: In Reply to: Question about car running rough, ECM trouble code 33 for O2 sensor... posted by Mikey P on September 09, 2004 at 12:05:34: drive car around to warm it up and get the O2 sensor hot. kill engine. turn ignition on. turn screw on ecu clockwise, hold 2 sec, then back. start car... rav to about 1500 rpm and watch the check engine light.. it shoudl flash a smi-random pattern.. about 1 sec on and off... light on = A/F rich (or lean, I forget now), light off = opposite.. doing that, you can positively verify that the sensor itself is working. Replys: I'll give that a try. Thanks Matt. n/m Mikey P (93 SE) 13:38:07 9/09/2004 (1) It would seem as though I have an open circuit.... Mikey P (93 SE) 15:28:01 9/09/2004 (0)

Name: |
E-Mail |
Car: |
Subject |
Message:
: drive car around to warm it up and get the O2 sensor hot. : kill engine. : turn ignition on. : turn screw on ecu clockwise, hold 2 sec, then back. : start car... : rav to about 1500 rpm and watch the check engine light.. it shoudl flash a smi-random pattern.. about 1 sec on and off... light on = A/F rich (or lean, I forget now), light off = opposite.. : doing that, you can positively verify that the sensor itself is working.