1999 E46 318i Radiator Fan Problem

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  1. 1999 E46 318i Radiator Fan Problem 
    #1
    Lex
    Lex is offline
    Bimmer Fan
    Car Details
    Lex's Car Details
    Model of Car:
    318i
    Year of Manufacture:
    1999
    Transmission Type:
    Manual
    Car Body Type:
    Saloon

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    Dec 2009
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    Hemel Hempstead
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    The fan on my radiator doesn't seem to be working. I have been trying to find out what is causing the problem. I have checked fuse 37 which seems to be fine, so I started looking at the Timer Unit that leads straight onto the fan.

    Please see below for the photo of the timer Unit from my radiator fan.

    There are 3 wires going into the timer unit and 2 comming out. I applied a positive and negitive feed directly to the wires comming out of the timer unit and hey presto we have life.

    I am guessing that the 2 wires going into this unit that are not the live are the switch for the unit. So I tried bridging these 2 connections to see if the fan would work but it didn't. Does anyone know if I am right in assuming that the fan should work with those 2 wires bridged?

     
     

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  3.  
    #2
    BMW Guru
    Car Details
    Ronnie's Car Details
    Model of Car:
    See above
    Year of Manufacture:
    Never too old, never too new
    Transmission Type:
    Always manual
    Car Body Type:
    Usually 5 doors
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    Dec 2007
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    Bournemouth, Dorset.
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    The DME(engine ECU) controls the fan operation, and it takes it's readings from the temperature sensor on the cylinder head.
     
     

  4.  
    #3
    BMW Crazed
    Car Details
    ako89's Car Details
    Model of Car:
    318i SE
    Year of Manufacture:
    1993
    Transmission Type:
    Manual Obv!
    Car Body Type:
    Saloon
    ako89's Avatar
    Join Date
    Jan 2010
    Location
    Crewe, Cheshire, UK
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    Does your car over heat? An elec fan won't kick in till its needed.
     
     

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