Air con faultfinding - Air-Con / Heating (Mk1/Mk2 Mondeo) -

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Air con faultfinding

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#1 busybusybee



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  • Vehicle Driven:Mondeo TDCi 2010

Posted 30 July 2010 - 10:21 PM

Have a mk2 that has air con, had it quite some years and the air con has never worked, had it regassed it hold's pressure and im sure the pump kicks in but never get's cold, any idea on how i can narrow this down to one item?? cheer's.
Does anyone actually read these???

#2 keithd


    Little Megger

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Posted 02 August 2010 - 08:55 AM

First of all you need to be sure that the clutch is actually engaging. Look at the compressor with the a/c switched on and check that the clutch plate engages and spins, then disengages and then engages again.

#3 cozmium


    Always busy with something...

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Posted 05 August 2010 - 12:24 AM

Like keithd says, you need to be absolutely sure the clutch is coming on - it'll make an audible 'clunk' and the end (which has 3 or 4 nodules sticking out) will spin too - disengaged it acts as nothing more than a pulley, and the clutch with the sticky-out nodule bits will be stationary.

If it IS moving and you know it's gassed apropriately and you don't get cold air, my advice is to absolutely not use it; it would pretty much mean it's totally blocked somewhere, and i'm not sure even the most rampant of 'air con black death' mould could cause that.

I'm suspecting however, if it's been sitting there not used, you likely have a pressure switch that has died and got 'stuck' or the clutch itself. Keep in mind that if even one component isn't doing what it should, the clutch will never engage becuase it gets its supply on an electrical ring passing through all the switches.


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