The complete automotive resource for buyers, sellers, and owners like you.
Car, Truck and SUV Forums at Roadfly
+ Bentley Forums
+ BMW Forums
+ Cadillac Forums
+ Chevrolet Forums
+ Ferrari Forums
+ Jaguar Forums
+ Lamborghini Forums
+ Lotus Forums
+ Mercedes-Benz Forums
+ Maserati Forums
+ MINI Forums
+ Porsche Forums
+ General Discussion
+ Marketplace Forums
My manual says check 02 sensor... But the other (archive)
[ Follow Ups ] [ 3-series (E30) Message Board ] [ Msg. Board FAQ ]
Posted by craig day on November 11, 2000 at 21:07:22:

In Reply to: 1990 325i "check Engine" light intermittent? posted by JJ on November 11, 2000 at 20:52:15:

problem I have experienced was the coolant temp
sensor.
Use your on board Motronic Diagnostic circuit.
Turn the key to on position (do not turn over the engine). Depress the gas pedal to the floor 5 times, then sit back and the motronics will tell you where you have a faulty circuit.
You will have a long red check egine light that will preceed the code. Next there will be a series of flashes. If you get 1-4-4-4 (that is on flash seperated by pause, 4 flashes separated by pause etc.) all circuits test good. If you get any other series of flashes it will incicate what circuit is faulty.
Check it out and tell me what you get and I can tell you what the problem is.

Follow Ups:


[ Follow Ups ] [ 3-series (E30) Message Board ] [ Msg. Board FAQ ]
Questions, comments, or problems, please visit the Roadfly help desk.
Roadfly.com Logo © 1997 - 2009 Jump Internet Inc. All rights reserved.