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    wewz14's Avatar
    wewz14 Posts: 2, Reputation: 1
    New Member
     
    #1

    Jun 27, 2012, 11:48 AM
    Car aircon not cooling
    Good am sr,I'm a mechanic and AC technician... I already change the cmpressor of the axior truck mercedes benz.. already have a frion gas... the compressor works good with the magnetic clutch.. its already cooling but after maybe 5 hours its not cooling again!what's the another problem of my aircon?thanks...
    TxGreaseMonkey's Avatar
    TxGreaseMonkey Posts: 16,761, Reputation: 5597
    Uber Member
     
    #2

    Jun 27, 2012, 01:50 PM
    If you notice, after driving the truck for a while, that air stops coming out of the vents, the A/C Clutch Cycling Switch may be bad. The cycling switch is supposed to control the evaporator core pressure at a point where the plate/fin surface temperature will be maintained slightly above freezing. Instead, it may be energizing the clutch too much and the system is icing up. In this situation, simply unscrew the old cycling switch from the Schrader valve-type fitting on the accumulator, coat the threads and O-ring with PAG oil, and install the proper cycling switch

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