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Fans, fuses and frustration!

Discussion in 'VW Mk3 Jetta, Passat TDI and other/older diesels' started by Stinky, Jul 21, 2010.

  1. Stinky

    Stinky New Member

    Joined:
    Jul 21, 2010
    Messages:
    4
    Gentlemen ( and ladies)
    I have the pleasure of owning a MK3 golf d (non turbo).
    My rad fan won`t kick in when sat in traffic of once car is turned off and left after a run.
    I tried the shorting out the radiator switch connector to no effect.
    I have located the correct fuse (19) and discovered a 15amp (blown) fuse in the slot.
    I replaced it with a 25amp fuse, which instantly caused the ignition to activate (no keys in the car) so the dash lights lit up, and the cabin heater fan kicked in (it was left on number 2).
    I tried the radiator switch short trick, and the fans span up as expected.
    Apart from my car being a crock, any suggestions as to what i should do next??
    Buying a mk 4 is not what I had in mind.
    Regards
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  2. Two Mikes

    Two Mikes New Member

    Joined:
    Jul 3, 2008
    Messages:
    85
    That sounds like fun. Have you considered entering it in a world's biggest lemon contest? So the fans work now?
  3. Stinky

    Stinky New Member

    Joined:
    Jul 21, 2010
    Messages:
    4
    The fact that the fan worked was never in dispute.
    What I can`t get my head around is the fact that if you insert a fuse into the rad fan slot, the ignition comes on. How does that work??
    I kind of guess trying to fault find vw electrics online is a bit like getting a haircut online?
    I just wondered if any other lucky golf owner had had a similar experience.
  4. chittychittybangbang

    chittychittybangbang Administrator

    Joined:
    May 23, 2007
    Messages:
    20,907
    Car:
    2006 Jetta TDI
    Location:
    CT
    My only guess is a wiring short somewhere. The cars are getting old so the wiring insulation may be getting brittle. At least the horn doesn't honk and the car catch on fire :dunno I recently saw an Audi a4 from the late 90s and the horn was honking for a half second every few seconds. Another driver pulled up along side to talk to them and I could see the Audi driver just shrugging.

    Do you have the wiring diagram in bentley? VW tended to make a few small changes to wiring in the same generation but any info is better than none.

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