Why does my ac blow cold, then hot, then cold then hot?
What is your question?
When the outside temp gets above 90 degrees the ac will begin to blow hot air. If I switch to Max AC and high fan speed it will eventually begin to blow cold air again. I can then switch back to AC and it will cool for awhile until it starts the hot air again.
I have checked the freon levels and it is good. I've also checked to make sure the compressor clutch is engaged. It does not blow hot air idling.
I'm hoping for some direction in finding the cause of this intermittent problem.
Well imagine that **Woody II in Sioux Falls, SD:**
The question below was posted by **Daleg in Crestview, FL** on September 20, 2016
Why does my ac blow cold air, warm air, cold air..... on 2001 Chevrolet Express 3500
The ac has very cold air idling. The compressor is engaged. I have cleaned the coil. When driving the ac air will blow cold, then not as cold, and back and forth but will keep the cab cool. When it gets above 90 degrees out side it will start blowing hot. If I turn the knob to full cold, max ac, and high fan speed, it will eventually blow cold air for several minutes. I've stopped and the compressor is engaged and the high side is hot and the low side is cold under the hood.o
As long as it is left on max ac and high fan speed it stays cold, but it can get too cold. If I tun it to ac and lower the fan speed it will eventually turn hot again. Is the problem in the control, an actuator or vacuum?
2001 Chevrolet Express 3500 > **by Daleg in Crestview, FL on September 20, 2016**
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