Automobile Air Conditioning Repair 2006 Ford Expedition Transmission Control. The area in between is the ideal operation range for your engine. What is really sad is that with a little knowledge on how auto ac works the fan clutch failing shows up as higher pressure on the high side.
While the radiator, cooling fan relay (or fan clutch), and cooling fan keep coolant from getting too hot, the thermostat makes sure the antifreeze doesn't get too cold.
The condenser is part of the A/C system.
We also have Repair Guides for your vehicle, simply follow the previous link and enter your vehicle's info. Ford has admitted there are issues with the climate control on some of these vehicles. My car has an automatic transmission.