Date: Thu, 23 Jan 2003 19:07:58 -0600 From: "Walt Kienzle" <wkienzlenopsam.net> Subject: '91 9000T "Check Engine"
The "Check Engine" light illuminated on my 1991 9000T. Before I go out and by the code reader, I wanted to see if anyone has an opinion as to weather it is worth buying, or if I should just replace the Lambda sensor and see if that solves the problem. Theoretically, I could have gotten a bad tank of fuel that is causing the light to come on, but I read somewhere that the sensor should be replaced every 60K miles and by that standard mine is probably overdue for replacement. My car has 130K miles on it; I haven't replaced the sensor and I don't think the previous owner did either. Continuing the thought - the front exhaust pipe might need replacement soon. Since the O2 sensor screws into that pipe (IIRC), should I just replace them both at the same time, or is it just as easy to replace them individually? Any opinions are appreciated. Walt Kienzle