WARNING: This page is about a different car, the 2006 Mercury Grand Marquis and 2006 Ford Crown Victoria. However, it is still accessible from the selected car via links, so may be relevant.

The A/C refrigerant system is a clutch cycling orifice tube type. The system components include:

A/C compressor
Clutch and clutch field coil
A/C condenser core
A/C evaporator core
Suction accumulator
Connecting refrigerant lines

The refrigeration system operation is controlled by:

Evaporator core orifice
A/C cycling switch
A/C pressure sensor
A/C compressor pressure relief valve

The refrigerant system incorporates an A/C compressor controlled by an A/C cycling switch.

The A/C cycling switch senses the A/C suction pressure to control A/C compressor operation.

An A/C compressor pressure relief valve is installed in the rear of the A/C compressor to protect the refrigerant system against excessively high refrigerant pressures.

The A/C evaporator core orifice is installed in the condenser-to-evaporator tube to meter the liquid refrigerant into the A/C evaporator core.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

Air Conditioning: Notes

Use the Manual With the Right Hardware

When to See a Mechanic

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