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Thread: Thermo fan.

  1. 16th January 2014, 08:57 PM #1
    Will Wallace's Avatar
    Will Wallace
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    Thermo fan.

    Hey all,

    The a/c Thermo fan stays on when the engine is on, regardless of the a/c being on or off. It even runs when over 40kmh when it is mean to turn off.

    Have tried swapping the relay thinking it may have stuck, no luck.

    Any ideas?
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  2. 16th January 2014, 09:05 PM #2
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    benji
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    It may be a pressure switch that's stuck on, or the engine temp sensor is reading high.
    I'm not sure on the d2s exactly, but on the p38s, there's two pressure switches near the dryer, if you unplug the one with two wires going to it the condenser fans won't work.
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  3. 16th January 2014, 09:46 PM #3
    ScotsD2
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    Fan running

    Might have gone over temp on engine if so you need to clear
    fault to stop fan
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  4. 16th January 2014, 09:59 PM #4
    Will Wallace's Avatar
    Will Wallace
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    Extra info...

    This started directly after I did the exhaust manifold studs, which involved shifting the a/c pump.


    That is all I can think of?
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  5. 17th January 2014, 06:37 AM #5
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    woko
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    Have a look at the wiring to the coolant temp sensor located where the top radiator hose attaches to the engine. When these open circuit the fans run

    Sent from my GT-I9295 using AULRO mobile app
    It doesn't leak oil, Its sweating power
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  6. 17th January 2014, 08:26 AM #6
    BIG O
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    I had this happen once exactly as you explain ..turned out to be a stuffed Air Flow Meter ?

    BIG O
    2003 D2 TD5 Auto
    1999 D2TD5 Auto ACE
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  7. 17th January 2014, 08:27 AM #7
    BIG O
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    I had this happen once exactly as you explain ..turned out to be a stuffed Air Flow Meter ?

    BIG O
    2003 D2 TD5 Auto
    1999 D2 TD5 Auto ACE
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  8. 17th January 2014, 12:33 PM #8
    CraigH
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    Does it turn on when you first start a cold engine?
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  9. 17th January 2014, 07:15 PM #9
    Will Wallace's Avatar
    Will Wallace
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    It does it when cold. I'll have a look at the MAF.
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  10. 18th January 2014, 06:34 PM #10
    BIG O
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    Try unplugging the MAF ..
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