How Do A/C Compressor Cut-Out Switches Relate to Refrigerant Pressure Sensor Service and Repair on Mercury Grand Marquis?

In order to maintain/repair the refrigerant pressure sensor/switch, first, unconnect the wire harness connector and discontinue the A/C pressure cutoff switch. To reinstall, follow the same process in reversal and also make sure that you lubricate the O-ring seal with PAG oil or other lubricant.

OEM Mercury Grand Marquis A/C Compressor Cut-Out Switches

HVAC Cut-Out Switch

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3 A/C Compressor Cut-Out Switches found

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Mercury Grand Marquis Pressure Switch Part Number: 8C3Z-19D594-A
$31.65 MSRP: $50.25
You Save: $18.60 (38%)
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Product Specifications
- Other Name: Switch - Air Conditioning System; A/C Refrigerant Pressure Sensor; A/C Clutch Cycle Switch; HVAC Switch; Cut-Off Valve; High Pressure Cut-Off Switch; Switch
- Replaces: YF1Z-19D594-AA, 4C2Z-19D594-AA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2001-2002 Mercury Grand Marquis | GS, LS | 8 Cyl 4.6 L GAS
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Mercury Grand Marquis Pressure Switch, Front Part Number: 6F9Z-19D594-AA
$81.96 MSRP: $132.24
You Save: $50.28 (39%)
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Product Specifications
- Other Name: Switch - A/C System - Vacuum; A/C Safety, Compressor, Trinary Switches; HVAC Pressure, System Switches; A/C Switch; Cut-Off Valve; High Pressure Cut-Off Switch; Clutch Cycling Switch; Pressure Switch
- Position: Front
- Replaces: F6CZ-19D594-CB, 6L2Z-19D594-BA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2003-2011 Mercury Grand Marquis | GS, GSL, Limited Edition, LS, LSE, Ultimate Edition | 8 Cyl 4.6 L FLEX, 8 Cyl 4.6 L GAS
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Mercury Grand Marquis Pressure Switch Part Number: F5CZ-19D594-AA
Product Specifications
- Other Name: Switch - Air Conditioning; A/C Safety & Compressor Cut-Out Switch; HVAC Pressure & Trinary Switch.; Switch - Air Conditioning System - Vacuum
- Replaces: F3DZ-19D594-A, F4CZ-19D594-A
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1998-2000 Mercury Grand Marquis | GS, LS | 8 Cyl 4.6 L GAS

Mercury Grand Marquis A/C Compressor Cut-Out Switches

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Mercury Grand Marquis A/C Compressor Cut-Out Switches Parts and Q&A

Pressure Switch
8C3Z-19D594-A
Q: How Do A/C Compressor Cut-Out Switches Relate to Refrigerant Pressure Sensor Service and Repair on Mercury Grand Marquis?
A: In order to maintain/repair the refrigerant pressure sensor/switch, first, unconnect the wire harness connector and discontinue the A/C pressure cutoff switch. To reinstall, follow the same process in reversal and also make sure that you lubricate the O-ring seal with PAG oil or other lubricant.