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Thread: 2012 Puma A/C

  1. 18th November 2019, 05:56 PM #1
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    2012 Puma A/C

    Hello gents
    The air conditioning has stopped in the puma. From what I can gather it wont send a signal to the compressor clutch until the fan starts. I have power at the fan switch, all the ac and fan fuses are ok, is there a fan relay under the dash or drivers seat I can check? Cant seem to find anything other than fuse identification in the book
    TIA
    Ian
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  2. 18th November 2019, 05:59 PM #2
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    If it doesn't have gas the clutch wont kick in, there will be a pressure switch you could short out to test if the clutch engages.

    Regards,
    Tote
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  3. 18th November 2019, 06:04 PM #3
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    Quote Originally Posted by Tote View Post
    If it doesn't have gas the clutch wont kick in, there will be a pressure switch you could short out to test if the clutch engages.

    Regards,
    Tote
    Refrigerant lever is fine, (im a Fridgy)
    Works great when the fan runs, but when the fan stops the clutch drops out. Something on the control circuit
    1964, S2a SWB "Ralph"
    1977, S3 SWB "Smeg" (Gone)
    1996 D1 300tdi auto (Gone)
    1973 Rangie Classic (Gone)
    2012, 110 (Series 12) Puma "The Tardis"
    1962 109" Tray Back "Ernie"
    1998 D1 300tdi (Dizzy)
    2017 Kawasaki Versys 1000

    You must now cut down the tallest tree in the forest... With... A HERRING!!!!!
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  4. 18th November 2019, 06:42 PM #4
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    Are you talking Evap fan?

    If its not running,compresser won't run,all cars are like that.
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  5. 18th November 2019, 06:49 PM #5
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    Quote Originally Posted by scarry View Post
    Are you talking Evap fan?

    If its not running,compresser won't run,all cars are like that.
    Hi Paul

    Yep, the evap fan seems to stop and start at will, when it stops ( whatever speed selector its on) the compressor
    stops. The trouble is in the control circuit, but I dont get into car air, so looking for advice on where to look. I have
    read there is a thermistor up behind the dash somewhere that is in the control circuit, do you know where it is, or
    do you have any ideas on what could make the fan work intermittently? One thing I have noticed, dont know if its
    just me, but the fan speed selector switch has very little resistance between speeds when sliding it. I do have 12v
    on the 3 terminals on the right and I think the left hand terminal on the fan switch plug is the neutral if I'm correct?

    Thx Ian
    1964, S2a SWB "Ralph"
    1977, S3 SWB "Smeg" (Gone)
    1996 D1 300tdi auto (Gone)
    1973 Rangie Classic (Gone)
    2012, 110 (Series 12) Puma "The Tardis"
    1962 109" Tray Back "Ernie"
    1998 D1 300tdi (Dizzy)
    2017 Kawasaki Versys 1000

    You must now cut down the tallest tree in the forest... With... A HERRING!!!!!
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  6. 18th November 2019, 08:59 PM #6
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    hi ian
    there is a thermostat on the evaporator in the dash this was causing a lot of problems with a/c
    give me a call and in the mean time I will look up the schematic
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  7. 19th November 2019, 08:07 PM #7
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    Quote Originally Posted by ezyrama View Post
    Hi Paul

    Yep, the evap fan seems to stop and start at will, when it stops ( whatever speed selector its on) the compressor
    stops. The trouble is in the control circuit, but I dont get into car air, so looking for advice on where to look. I have
    read there is a thermistor up behind the dash somewhere that is in the control circuit, do you know where it is, or
    do you have any ideas on what could make the fan work intermittently? One thing I have noticed, dont know if its
    just me, but the fan speed selector switch has very little resistance between speeds when sliding it. I do have 12v
    on the 3 terminals on the right and I think the left hand terminal on the fan switch plug is the neutral if I'm correct?

    Thx Ian
    So the evap fan has an issue,need to trace the power when its playing up,i know easier said than done.
    The thermostat should only stop the compresser clutch,same as pressure switches.
    I would start with the fan switch if it feels a bit dicky,but a wiring schematic would be helpful.
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  8. 20th November 2019, 01:05 PM #8
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    Quote Originally Posted by scarry View Post
    So the evap fan has an issue,need to trace the power when its playing up,i know easier said than done.
    The thermostat should only stop the compressor clutch,same as pressure switches.
    I would start with the fan switch if it feels a bit dicky,but a wiring schematic would be helpful.
    Managed to get the plug out of the fan motor. 12v there. Power comes from the battery thru the 30 amp fuse under the dash,
    through 60 amp link under seat, to fan motor then to the resistor which controls the speed through the resistance. Put 12v
    straight to the fan motor, zip, nada, sweet bugger all. Fan motor is ted's brother, just in time for the heat to hit. Sweating
    like Rolf Harris at a wiggles concert atm. Thx God I'm not in Cairns. Got one on order, hopefully arrives later this week.
    1964, S2a SWB "Ralph"
    1977, S3 SWB "Smeg" (Gone)
    1996 D1 300tdi auto (Gone)
    1973 Rangie Classic (Gone)
    2012, 110 (Series 12) Puma "The Tardis"
    1962 109" Tray Back "Ernie"
    1998 D1 300tdi (Dizzy)
    2017 Kawasaki Versys 1000

    You must now cut down the tallest tree in the forest... With... A HERRING!!!!!
    Reply With Quote Reply With Quote
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