Engine Size: 5.2L V8
Refrigerant Type: 134a
Country of Origin: United States
I have a 1999 Dodge Durango that suddenly stopped cooling. Initially the engine began to lose RPMs and almost stall at an idle then the Check Engine light would pop on, everything would run fine except no cool air. The blower works, I have replaced the relay, pressures are within limits on the high and low side, I have checked the switches on the low and high side and they are both okay, I can jump the ac clutch and it will start to run and cool. I had the line checked going to the ac clutch and it appears that I am not getting power there. Does anyone have any further suggestions as to what could be causing this problem?
If it was mine, I'd first jump power to the AC clutch and then check both low and high side pressures at about 1500 rpm and post those. But don't run too long with circuit jumped like that, as you are over-riding the system's protection.
If your operating pressures look OK, then I'd either check for proper refrigeration amount by recovery machine or check electrical functions.
I have been able to jump the clutch and it will cool just fine, but like you said can only do that for so long. System wide everything appears okay. The only thing left that I can think of is electrical but not sure where to start. Like I said already replaced relay, blower works, all the circuits are fine. Only place I can think of is within the wiring itself, or if there is some other place that a short could have occurred that is not allowing current to the clutch.
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