Re: 2003 Expedition AC Problems
What is the gauge reading with a/c on and blower on max? Should be between 25 - 35 psi. Any lower and it would cause it to freeze up and cycle the compressor off and on. Too much would cause it not to cool enough. I like mine in the 30 - 35 range. Also remember, more refrigerant pressure does not mean more cooling, its just the opposite.