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In the recent years past I have posted about A/C problems with this car, and did some work, too. Both pressure switches replaced, learned more about this specific system works, even bought a used compressor (not installed). The problem persisted.
System worked fine on starting up, even on a 100F day. After 20 to 30 minutes, the compressor kicks out (normal?) but would not kick in. So it's back to the 4-55 system (4 windows down, drive 55 mph). After maybe 30 minutes, system would come on again and blow icy air for a while, then out again.
So this time I had my indie shop do a drain re-fill and leak check, so that much is good. Then comes the old problem. So I wondered if it was icing up?
Now if I set the fan knob on Auto, air distribution knob on Auto, Re-circulation button OFF, and temp at 72F, it will run just fine for a long time. Setting the temp at 76F lets it run correctly even longer.
In fact, at start-up the re-circ button is ON, and the fan at full speed. As the car cools, the re-circ button turns off and the fan slows.
The car lives in the driveway, shaded by tall pines and many oaks. If the years of falling tree stuff has made a clogged up air intake, I think that such a restriction would make for pre-mature icing. That theory fits with system performance, so far.
So my next step would be to clear out any restrictions from the air intake duct work. But danged if I can see how to do that?
Any ideas will be welcome.
Thanks,
Bob
:>)
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