AirCon Question

[momoyster]

from your description, it seems that your a/c compressor is only engaged for a brief moment. i think that since bago yung evaporator mo, mas mabilis mag- cut off yung operation ng a/c compressor since it can easily reach the coldness that would trigger the thermostat to disengage the compressor from operating. i also experienced that before, had our old model pajero's aircon serviced. as expected, the aircon really blew cold but the coldness inside the cabin would be very brief as the a/c compressor would cut-off faster than its usual rate; it was even worse when the car is moving at a high speed (therefore high rpm). i returned the car to the shop because of this, the remedy: they just adjusted the probe of the thermostat that was positioned near the opening of the blower assembly. medyo inilayo lang nila yung probe from the blower opening para di exposed directly yung probe from all the cold air coming from the blower/evaporator assembly. after that, since di masyado direct hit ng cold air yung probe, the operation of the a/c compressor was longer and thus cooler air inside the cabin stayed longer, but pag sobrang lamig na, automatic cut-off of the compressor would still take place. my guess is that thermostat din yung culprit ng aircon mo. however, i dunno kung applicable yung ginawa nung aircon shop sa pajero namin sa auto mo because medyo primitive at r-12 lang yung aircon nung '89 pajero namin e. baka mas sophisticated yung thermostat ng modern cars now; yung thermostat probe ng pajero namin dati ay parang alambre lang na nakatusok dun sa may opening nung blower kaya madali lang na-adjust.