RE: 1990 325is e30 - intermittent check engine light

[Aaron Smith <Aaron@xxxxxxxxxxx>]

To find out the source of the problem (most likely it's a sensor) you must
first determine which fault code/s are being stored in the ECU.  The link
below provides of list of codes and explains how to output them using the
check engine light.

http://www.bonnevillemotorwerks.com/fault.html

This should provide you with a starting point.

Cheers,
Aaron
'88 325is

------------------------------