Do you mean the Check Engine light? You need a code reader to identify the problem, try posting on the regular E36 forum and give a little more details of the issue, maybe you'll have more answers.
This is an older thread, you may not receive a response, and could
be reviving an old thread. Please consider creating a new thread.
BimmerFest BMW Forum
A forum community dedicated to BMW owners and enthusiasts. Come join the discussion about Bimmerfest events, production numbers, programming, performance, modifications, classifieds, troubleshooting, maintenance, and more! Bringing the BMW community together.