Date: Fri, 24 Jan 2003 08:57:13 +0100
From: Nel Frikandel <>
Subject: Re: '91 9000T "Check Engine"

On Thu, 23 Jan 2003 19:07:58 -0600, "Walt Kienzle" <> wrote: >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. This could be way off with since yours is '91, and I own a '95 and the motormanagement systems might differ, but there seems to be a way to read the check engine codes without a reader. Or at least a rough division of the codes. Turn on the ignition, leave it on but don't crank yet. The Check Engine light comes on for a couple of seconds, then goes off again. Than it comes back and blinks a couple of times. The amount of blinks it makes should give you a indication of what caused it. 6 blinks indicates in my car that the problem is in the O2/exhaust system, ergo lambda sond. I don't know what the other blink codes are, if somebody knows I'd be interested to hear. Good luck, Nel

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