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cold/warm/cold a/c?
My A/C will blow cold air for the first three to four minutes and then the inside of the cab will begin to get humid and the cold air acts like it mixes with the hot air. For the next three to four minutes the air temperature is warm and then it returns to cold. This cycle will repeat itself over and over. When the air is blowing warm the low side has extremely high pressure. When the air is blowing cold the low side is with in the normal pressure reading. I thought I would check the blend actuator behind the glove box. It engages as I turn the a/c switch on. When the air temp warms up the actuator stays engaged (no voltage drop and no visual change). Any suggestions?
2002 7.3 Powerstroke - stock – 81k miles.
Thanks, Thomas
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