E46 M3 Aux Fan Not Working

Just one single engine fan responsible for all the cooling down of that engine bay.

E46 m3 aux fan not working.

If the fan is not operating check the power connector at the base of the fan and make sure it s seated. I don t have a mechanical fan due to space restrictions of the swap in the e30 engine bay. The n15 design e46 m3 electric fan mount is a great way to add a 16 spal electric fan because it s so easy to install. Go to my website and bmw forum.

In addition the aux fan controller mount optional allows you to retain the stock controller to run the fan on auto as an oem style would. I run the pusher fan where the stock aux would be located. Our initial testing should provide a determination of where the fault lies. You can test that the fan is receiving power with a multimeter you ll want to test between the thicker red and brown iirc wires on the aux fan connector.

The third picture shows what it looked like with the e30 condensor aux fan still installed. How the system functions non modulated fans most models through late 90s. I d suggest you sort out your aux fan if you can not sure how the setup is on the m54. 31 03 2015 12 02 am oppositelockmt wrote.

I have the spal 16 pusher with an e46 m3 rad. When the fan does not work we could be looking at a faulty fan motor low speed fan resistor temperature switch es low speed or high speed relay fuses or wiring problems. If this still fails to turn on the fan i suggest you turn off the engine for now and consider troubleshooting other aspects of the cooling fan electrical system including the low speed fan relay.