2003 Ford Expedition Help its hot outside

I first need to know if the AC compressor is cycling on and off.

Let me know.
Joe

If you look at the front of the ac compressor under the hood, you will see where the belt rides on the compressor pulley. Here is a picture:

Now if you notice, there is a pulley and inside the pulley is the clutch. With the AC off, the pulley will spin with the engine running and the center (clutch) will stay still and not move. When you turn the AC on, that center (clutch) will lock up with the pulley and begin spinning. That is what ment by the compressor running (cycling). It will run for awhile, then go off for a few seconds, then back on. That is the cycling part. Check that and let me know what it does, or if you have other questions.

Joe

If it is cycling, that tells me the system has freon and is working. Let it run and see if the lines from the compressor get cold. If they do, then we have a different problem. Chances are the blend door isn't opening. It determines if you get heat or AC inside the vehicle.

Let me know.
Joe

If it is cycling, that means there is freon in the system and it is working. That leads me to what is called a blend air door. It is a door that determines if you have heat or AC coming into the vehicle. It is located near the heater core. If it isn't working, even though the AC is working, you will not get cold air.

Hi:
I just need to confirm one thing. Are you getting AC out of a different location other than the vents. For example, is it coming out the defroster or is there no cold air at all getting into the vehicle?

I just want to make sure before I answer.

Joe