E30 Aux Fan Resistor

I ve confirmed the resistor is bad so the fan doesn t run.

E30 aux fan resistor.

The e30 m3 or otherwise a c fan is the same fan as used on the m3 that does not have a c. Once the temperature reaches a certain dangerously warm level that the engine driven fan doesn t seem to be compensating for. Some e30s have a ceramic one by bosch other have a black metal one with cooling fins made by magna. In reading all the posts on the two speed fan i ve learned that the only time the fan runs on the high speed is when the radiator high temperature switch.

17 40 1 373 177 bosch ceramic aux fan resistor 64 12 1 388 069 magna black aux fan resistor. Remove the front license plate if present and remove the 2 mounting screws holding the resistor bracket to the aux fan assembly. The high pressure reading reaches 425 then the high pressure switch shuts down the compressor. If you get a successful conversion in place i d be very interested in knowing which spal model you use.

The fan should run on low speed when the a c is running and on high speed if the engine is getting close to overheating. I noticed in the bentley manual the fan should come on at one of two speeds once the car temperature is a certain level. These instructions are for the bosch resistor pictured below on the right. There are two different resistors listed for e30 s the bosch ceramic and the magna plastic encased.

Non bmw fans have also been fitted. Bmw can supply the correct brackets to mount this fan without mods or drilling extra holes. I m planning on getting my a c working this summer and the aux fan is a necessary part of the a c on these cars. When the ac is on.

The only thing i know for sure about the aux fan is that it seems to draw a lot of amps for the amount of air it moves. These instructions are for the bosch resistor pictured below on the right. The auxiliary fan resistor is in need of replacement when the auxiliary fan does not operate at low speed. E30 aux fan questions.

E30 aux fan resistor replacement and the two different e30 auxiliary fan types rts your total bmw enthusiast.