Climate Control - Lack Of Cooling, A/C Always On Or A/C Does Not Cut-Off Under Wot

WARNING: This page is about a different car, the 2002 Mercury Villager. However, it is still accessible from the selected car via links, so may be relevant.

Check A/C relay and circuits. See TEST KM: A/C RELAY CIRCUIT under SYSTEM TESTS in SELF-DIAGNOSTICS - VILLAGER article.
Check A/C system. See MANUAL A/C-HEATER SYSTEMS - VILLAGER or AUTOMATIC A/C-HEATER SYSTEMS - VILLAGER article in AIR CONDITIONING & HEATING.