Where is the high pressure switch located on the air condition system of a 1998 mercury sable?
Should be at the passenger side firewall on top of the drier
There is a low pressure switch located on the suction accumulator/drier which is located under the hood of the engine compartment. Standing in front of the engine compartment look straight down a little to your right up close to the engine radiator and see the drier. There are 2 refrigerant lines and an electrical connection on the drier, this connector is connected to the low pressure switch on the drier. Hope this helps you. Serg.............
There is actually a low-pressure switch and a high-pressure switch. The low-pressure switch is located on the right side rear of the engine compartment on top of the AC accumulator. The high switch is on the AC high pressure line in the area behind the left headlamp assembly. Niether one is hard to replace, it's self-explanatory when you see them.