91chevyluminaeuro Posted April 1, 2005 Report Share Posted April 1, 2005 I checked teh codes on my car, i got 13,23,and 33. i pluged the sensor back into my intake and then cleared the codes, ran it today and re-checked the codes i still got code 13, o2 sensor, ive got on but i dont know where its located.... can anyone point me in the right direction? ive got a 91 chevy lumina euro with the 3.1. Quote Link to comment Share on other sites More sharing options...
5speedz34 Posted April 1, 2005 Report Share Posted April 1, 2005 The O2 sensor is located behind the rear exhaust manifold, on the downpipe. You'll have to rock the motor forward to get to it. I would recommend getting a AC Delco O2 before anything else. Quote Link to comment Share on other sites More sharing options...
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