2008 Expedition XLT AC issues

[TomFFMedic]

I have a 2008 XLT. I will try and break this down. I have cool air while on the highway coming from the front vents. If I stop only warm air. Cool air meaning 74deg out of the vent when it is 90deg outside. Once it hits 101 no cool air no matter if on highway or not.

Any assistance is appreciated.
Tom

 

[TomFFMedic]

Dude... Did I it wear my deodorant?

 

[stamp11127]

As has been stated multiple times in multiple threads - we need to know the operating pressures to start the diagnosis. Your local parts stores usually loan/rent a gauge set or you can pick a cheapy at Harbor Freight.

 

[TomFFMedic]

Sorry. Was on heavy doses on narcotics while trying to figure this out. Had back surgery. Will get the gauges and readings.
Tom