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
Re: Fan Cut-in levels (archive)

[ Follow Ups ] [ E30 M3 Message Board ] [ Msg. Board FAQ ]

Posted by MarkD on March 02, 2001 at 11:17:53:

In Reply to: Auxillary Fan questions and overheating M3 at idle posted by Oliver30 on February 28, 2001 at 23:03:15:

This applies to Euro M3's - presumably US can't be much different?

Pre '88 cars had a one speed fan which cut in when the temp guage hit the 3/4 mark, the sensor for this is at the bottom of the radiator (which eventually silts up!), and the wires break often.

Later cars have the sensor moved to the other side of the car (the bulb like piece of rubber on the passenger side of the car where the tubing comes out of the radiator - this makes it quicker to react). This controls the two speed fan. Speed one should cut in just over the half way mark and full speed cuts in at 3/4.

An alternative (which I've had done) is to have the wiring/sensor updated but have full speed set to come in at a little over half way - in normal driving your fan should need to cut in but in a serious jam it gives you a little reassurance - just what you need in a lot of modern traffic!!



Follow Ups:



[ Follow Ups ] [ E30 M3 Message Board ] [ Msg. Board FAQ ]
Questions, comments, or problems, please visit the Roadfly help desk.
Roadfly.com Logo © 1997 - 2017 Jump Internet Inc. All rights reserved.