Why doesn't my AC cycle?
#4
Administrator
#7
Administrator
Try disconnecting the compressor clutch power wire, while it's running, and manually cycle it a few times. Also, put in on ac, slide it all the way to the red and then try manually disconnecting the clutch...Mark
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#8
Registered User
Thread Starter
on my dad's 04 the lines get REALLY cold when the compressor cycles. Mine should not be getting hot, they should freeze. I can't even hold my return line. the line going in to the evaporator is only somewhat cold.
#10
Administrator
Is it blowing cold air? ...Mark
#13
Administrator
I know that GM systems have an in-line filter, usually connected near the filter dryer or accumulator. When these clog up it produces the symptoms that you describe. I do not know if the Dodge system has one, maybe somebody else knows...Mark
#14
Registered User
the condenser line to the expansion valve should be hot, the line out of the evaporator to the compressor reveals the colder temperatures with a full charge, and a full frost pattern across the coils. you look at the dryer sight glass to monitor the refrigerant charge going from foam/bubbles at lower charge, to liquid at full charge, no bubbles, at this point, the suction line, evap to compressor, should reveal a cold "feel". a set of gauges will reveal a restriction, usually at the expansion valve, showing a lower than normal suction pressure/higher than normal high side pressure. when i got mine up and running, lines were right temps, evap was plugged with dog hair, vacuumed the co-driver discharge out of the compartment, and performance resumed.
#15
Registered User
Thread Starter
I cleaned my evaporator as well the line from the expansion valve thru dryer to condenser gets so hot you can't hold your hand on it. The sight glass has a FEW bubbles, and we put a can of R12 on it, but it won't take any more. Guessing pressure is too high, but I don't have a gauge. What does a dryer cost? should I start there? Maybe the condenser? This is new to me and I'm trying to learn as much as I can. Thanks!