The "check engine" light just came on today during the drive home. I pulled over, checked for any obvious loose wires, etc, but found nothing. I used the diagnostic connector and found that it gave me a 2-3-1 code, which supposedly means "fuel system compensating for rich or lean mixture at cruise". I cleared the code and restarted the engine, but the "check engine" light stayed on. The car seemed to drive normally, no loss of power or acceleration, and the temp gauge stayed at its normal position. The car is '89 240 wagon, automatic, with about 210,000 miles showing. I've owned it for the last 40,000 or so, it passed the emissions test about 6 weeks ago with completely normal numbers, and the O2 sensor was replaced about 10,000 miles ago. Any suggestions what I should check next?
m9876c at yahoo dot com