# I'll give that a try. Thanks Matt. n/m

Posted by Mikey P (93 SE) on September 09, 2004 at 13:38:07: In Reply to: try putting the car in diag mode II.. --> posted by Matt on September 09, 2004 at 12:11:28: : 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: It would seem as though I have an open circuit.... Mikey P (93 SE) 15:28:01 9/09/2004 (0)

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: : 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.