Help again please!!

Discussion in 'Tech/Mech General' started by Coolbeanz, Jun 16, 2014.

  1. Coolbeanz

    Coolbeanz Funster

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    When we left Messanges this morning Glynn switched the fan on in the cab and nothing happened. He then turned it up from 1 to 2 and then 3 but still nothing. He then switched it on to the max and windscreen level and it works so we either have full blast air or nothing. Any ideas?
     
  2. TheBig1

    TheBig1 Funster Life Member

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    faulty switch?
     
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  3. buckby

    buckby

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    Possibly fan resistor that controls the speed.
    Depending on age it could be mounted in the heater box under the dash
     
  4. ivorantony

    ivorantony Funster

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    Yes that is a typical fault of the resistor pack, usually screwed into the fan housing to help cooling,
     
  5. Coolbeanz

    Coolbeanz Funster

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    Is it something we can fix or do we need a new part? :cry:
     
  6. JonMac46

    JonMac46

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    You need to buy a replacement part. Lots to see if you google.
     
  7. tofo

    tofo Funster

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    Got the resistor for my fiat from a citroen dealer :thumb:

    Found the resistor just above your toes on the fan motor
    Uk passenger side

    :thumb::thumb::thumb:
     
  8. timdownieuk

    timdownieuk Funster

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    As others have said, a resistor pack is used to control fan speed but typically, if it was all working one day and then just on full speed the next, it's the attached thermal fuse that has blown.

    The resistors are hottest when the fan is on slow speed and if filters are a bit blocked (or sometimes for no reason at all) it gets too hot for the thermal fuse and it blows.

    In my last van I just replaced the thermal fuse attached to the resistor pack and all was well. Cheap to buy off of eBay. Do note that you can't easily solder in a new fuse without blowing it by overheating. The manufacturers usually spot weld them in. If you cut out the old fuse leaving as long tails as possible, you can either crimp the new fuse to the old tails or use the metal innards from a small "chocolate block" connector to join the ends.
     
  9. timdownieuk

    timdownieuk Funster

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