How can the A/C Compressor Cut-Out Switches and HVAC Pressure Switch be replaced on the Mercury Mountaineer?

The pressure cycling switch, detecting low refrigerant line pressure at 21-27 psi, turns the A/C compressor off and on again at 42 psi. If pressure exceeds 455-495 psi, the high-pressure cut-off switch near the compressor turns it off. To replace, disconnect the electrical connector and unscrew the switch from the Schrader valve. No need to discharge the A/C system. Lubricate the switch O-ring with clean refrigerant oil, screw the new switch until hand tight, then secure it. Reconnect the electrical connector.

Genuine Mercury Mountaineer HVAC Pressure Switch

Air Pressure Switch

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14 HVAC Pressure Switches found

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Mercury Mountaineer Switch - Air Condition System - Vacuum
Part Number: 6F9Z-19D594-AA
$114.67 MSRP: $153.82
You Save: $39.15 (26%)
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Product Specifications
- Replaces: 6L2Z-19D594-BA, F6CZ-19D594-CB
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2006-2010 Mercury Mountaineer | 6 Cyl 4.0L SOHC EFI, 8 Cyl 4.6L | 5-Speed Automatic Transmission 5R55S, 5-Speed Automatic Transmission 5R55W, 5-Speed Manual Transmission (M5R4), 6-Speed Automatic Transmission (6R80), 6-Speed Automatic Transmission 6R60, Four-Wheel Drive (Full Time) (Left Hand Drive), Four-Wheel Drive (Part Time) (Left Hand Drive), Four-Wheel Drive (Part Time) (Right Hand Drive), Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
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Mercury Mountaineer Valve Assembly
Part Number: 4L3Z-19D701-A
$7.60 MSRP: $11.33
You Save: $3.73 (33%)
Ships in 1 Business Day
ADD TO CART
Product Specifications
- Other Name: Valve Assy
- Replaces: 4R3Z-19D701-AA, F8RZ-19D701-AA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1998-2010 Mercury Mountaineer | 6 Cyl 4.0L, 6 Cyl 4.0L SOHC EFI, 8 Cyl 4.6L, 8 Cyl 4.6L Romeo SOHC EFI, 8 Cyl 5.0L | 4AT 4R70W, 5-Speed Automatic Transmission 5R55S, 5-Speed Automatic Transmission 5R55W, 5-Speed Manual Transmission (M5R4), 5AT 5R55E, 6-Speed Automatic Transmission (6R80), 6-Speed Automatic Transmission 6R60, Four-Wheel Drive (Full Time) (Left Hand Drive), Four-Wheel Drive (Part Time) (Left Hand Drive), Four-Wheel Drive (Part Time) (Right Hand Drive), Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
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Mercury Mountaineer Valve Assembly
Part Number: E69Z-19D701-A
$4.46 MSRP: $7.27
You Save: $2.81 (39%)
Ships in 1 Business Day
ADD TO CART
Product Specifications
- Other Name: Valve Assy
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1997-2010 Mercury Mountaineer | 6 Cyl 4.0L, 6 Cyl 4.0L SOHC EFI, 8 Cyl 4.6L, 8 Cyl 4.6L Romeo SOHC EFI, 8 Cyl 5.0L | 4AT 4R70W, 5AT 5R55E, 5-Speed Automatic Transmission 5R55S, 5-Speed Automatic Transmission 5R55W, 5-Speed Manual Transmission (M5R4), 6-Speed Automatic Transmission (6R80), 6-Speed Automatic Transmission 6R60, Four-Wheel Drive (Full Time) (Left Hand Drive), Four-Wheel Drive (Part Time) (Left Hand Drive), Four-Wheel Drive (Part Time) (Right Hand Drive), Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
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Mercury Mountaineer Valve Assembly
Part Number: F7RZ-19D701-BA
$7.45 MSRP: $11.11
You Save: $3.66 (33%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Valve Assy
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2000-2010 Mercury Mountaineer | 6 Cyl 4.0L, 6 Cyl 4.0L SOHC EFI, 8 Cyl 4.6L, 8 Cyl 4.6L Romeo SOHC EFI, 8 Cyl 5.0L | 4AT 4R70W, 5AT 5R55E, 5-Speed Automatic Transmission 5R55S, 5-Speed Automatic Transmission 5R55W, 5-Speed Manual Transmission (M5R4), 6-Speed Automatic Transmission (6R80), 6-Speed Automatic Transmission 6R60, Four-Wheel Drive (Full Time) (Left Hand Drive), Four-Wheel Drive (Part Time) (Left Hand Drive), Four-Wheel Drive (Part Time) (Right Hand Drive), Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
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Mercury Mountaineer Valve Assembly - Pressure Relief
Part Number: F65Z-19D644-AA
$45.38 MSRP: $67.64
You Save: $22.26 (33%)
Ships in 1 Business Day
ADD TO CART
Product Specifications
- Other Name: Valve Assy - Pressure Relief
- Replaces: F65Z-19D644-A1A
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2006-2010 Mercury Mountaineer | 6 Cyl 4.0L SOHC EFI, 8 Cyl 4.6L | 5-Speed Automatic Transmission 5R55S, 5-Speed Automatic Transmission 5R55W, 5-Speed Manual Transmission (M5R4), 6-Speed Automatic Transmission (6R80), 6-Speed Automatic Transmission 6R60, Four-Wheel Drive (Full Time) (Left Hand Drive), Four-Wheel Drive (Part Time) (Left Hand Drive), Four-Wheel Drive (Part Time) (Right Hand Drive), Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
- 1998-2001 Mercury Mountaineer | 8 Cyl 5.0L | 4AT 4R70W, 5AT 5R55E
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Mercury Mountaineer Switch - Air Condition System - Vacuum
Part Number: F5TZ-19D594-AA
$54.09 MSRP: $86.24
You Save: $32.15 (38%)
Ships in 1 Business Day
ADD TO CART
Product Specifications
- Other Name: Switch - Air Condit.System - Vacuum
- Replaced by: 6L3Z-19D594-A
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1997-2001 Mercury Mountaineer | 8 Cyl 5.0L | 4AT 4R70W, 5AT 5R55E
View related parts
Mercury Mountaineer Valve Assembly
Part Number: F8RZ-19D701-AA
$7.60 MSRP: $11.33
You Save: $3.73 (33%)
Ships in 1 Business Day
ADD TO CART
Product Specifications
- Other Name: Valve Assy
- Replaced by: 4L3Z-19D701-A
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1998-2001 Mercury Mountaineer | 6 Cyl 4.0L, 8 Cyl 5.0L | 4AT 4R70W, 5AT 5R55E
View related parts
Mercury Mountaineer Switch - Air Condition System - Vacuum
Part Number: 6L2Z-19D594-AA
$54.29 MSRP: $80.91
You Save: $26.62 (33%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Switch - Air Condit.System - Vacuum; High Pressure Cut-Off Switch, Pressure Switch
- Replaces: F3AZ-19D594-C
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2007-2010 Mercury Mountaineer | 8 Cyl 4.6L | 5-Speed Automatic Transmission 5R55S, 5-Speed Automatic Transmission 5R55W, 5-Speed Manual Transmission (M5R4), 6-Speed Automatic Transmission (6R80), 6-Speed Automatic Transmission 6R60, Four-Wheel Drive (Full Time) (Left Hand Drive), Four-Wheel Drive (Part Time) (Left Hand Drive), Four-Wheel Drive (Part Time) (Right Hand Drive), Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
- 2002-2005 Mercury Mountaineer | 6 Cyl 4.0L SOHC EFI, 8 Cyl 4.6L Romeo SOHC EFI | 5-Speed Automatic Transmission 5R55S, 5-Speed Automatic Transmission 5R55W, 5-Speed Manual Transmission (M5R4), 6-Speed Automatic Transmission (6R80), 6-Speed Automatic Transmission 6R60, Four-Wheel Drive (Full Time) (Left Hand Drive), Four-Wheel Drive (Part Time) (Left Hand Drive), Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
View related parts
Mercury Mountaineer Valve Assembly - Pressure Relief
Part Number: F3DZ-19D644-A
$20.38 MSRP: $37.27
You Save: $16.89 (46%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Valve Assy - Pressure Relief
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1997-2000 Mercury Mountaineer | 8 Cyl 5.0L | 4AT 4R70W, 5AT 5R55E
View related parts
Mercury Mountaineer Switch - Air Condition System - Vacuum
Part Number: F3AZ-19D594-C
$54.29 MSRP: $80.91
You Save: $26.62 (33%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Switch - Air Condit.System - Vacuum
- Replaced by: 6L2Z-19D594-AA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2002-2005 Mercury Mountaineer | 6 Cyl 4.0L SOHC EFI, 8 Cyl 4.6L Romeo SOHC EFI | 5-Speed Automatic Transmission 5R55S, 5-Speed Automatic Transmission 5R55W, 5-Speed Manual Transmission (M5R4), 6-Speed Automatic Transmission (6R80), 6-Speed Automatic Transmission 6R60, Four-Wheel Drive (Full Time) (Left Hand Drive), Four-Wheel Drive (Part Time) (Left Hand Drive), Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
View related parts
Mercury Mountaineer Valve Assembly
Part Number: F4XY-19D701-A
$25.01 MSRP: $37.27
You Save: $12.26 (33%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Valve Assy; Core Assembly, Expansion Valve
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1997 Mercury Mountaineer | 8 Cyl 5.0L | 4AT 4R70W
View related parts
Mercury Mountaineer Switch - Air Condition System - Vacuum
Part Number: F6RZ-19E561-AA
Product Specifications
- Other Name: Switch - Air Condit.System - Vacuum
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2002-2010 Mercury Mountaineer | 6 Cyl 4.0L SOHC EFI, 8 Cyl 4.6L, 8 Cyl 4.6L Romeo SOHC EFI | 5-Speed Automatic Transmission 5R55S, 5-Speed Automatic Transmission 5R55W, 5-Speed Manual Transmission (M5R4), 6-Speed Automatic Transmission (6R80), 6-Speed Automatic Transmission 6R60, Four-Wheel Drive (Full Time) (Left Hand Drive), Four-Wheel Drive (Part Time) (Left Hand Drive), Four-Wheel Drive (Part Time) (Right Hand Drive), Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
View related parts
Mercury Mountaineer Switch - Air Condition System - Vacuum
Part Number: F5VY-19E561-A
Product Specifications
- Other Name: Switch - Air Condit.System - Vacuum
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1997-2001 Mercury Mountaineer | 6 Cyl 4.0L, 8 Cyl 5.0L | 4AT 4R70W, 5AT 5R55E
View related parts
Mercury Mountaineer Valve Assembly - Pressure Relief
Part Number: 1L2Z-19D644-AA
Product Specifications
- Other Name: Valve Assy - Pressure Relief
- Manufacturer Note: Valve Assy - Air Conditioning Compressor Pressure Relief
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2002-2005 Mercury Mountaineer | 6 Cyl 4.0L SOHC EFI, 8 Cyl 4.6L Romeo SOHC EFI | 5-Speed Automatic Transmission 5R55S, 5-Speed Automatic Transmission 5R55W, 5-Speed Manual Transmission (M5R4), 6-Speed Automatic Transmission (6R80), 6-Speed Automatic Transmission 6R60, Four-Wheel Drive (Full Time) (Left Hand Drive), Four-Wheel Drive (Part Time) (Left Hand Drive), Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)

Mercury Mountaineer HVAC Pressure Switch

The Mercury Mountaineer HVAC Pressure Switch plays an essential role in creating a comfortable driving experience. It sends accurate refrigerant pressure data to the control unit, allowing it to determine when to cool or heat. Although small, it provides an important piece to the puzzle of the air conditioning system like the fan or blower relay, and if it fails, then the system fails. The HVAC Pressure Switch in each Mercury Mountaineer identifies the refrigerant pressure and relays a simple on-off signal to the control module, determining whether the compressor and other components are engaged. A malfunctioning HVAC Pressure Switch can stop the air from blowing, blow the wrong temperature of air, and sound a dash warning. Replacing it before summer can avoid sweaty summers and icy winters. Over the years, the SUV has stuck with a straightforward pressure sensing design, so differences between early and later Mercury versions lie mainly in updated electronics rather than in basic function. Having a fresh HVAC Pressure Switch in place guarantees the Mercury crossover delivers the climate response Mountaineer owners expect. The replacement of a bad relay is as smart as the timely switch replacement since each Mountaineer relies on this HVAC Pressure Switch.

We provide a wide range of Mercury Mountaineer HVAC Pressure Switch at the optimal prices. If you need Mercury Mountaineer HVAC Pressure Switch, you can shop with confidence on our website. All our OEM parts come with a manufacturer's warranty and are delivered to your doorstep with a fast delivery service.

Mercury Mountaineer HVAC Pressure Switch Parts Questions & Experts Answers

Valve Assembly
E69Z-19D701-A
Q: How can the A/C Compressor Cut-Out Switches and HVAC Pressure Switch be replaced on the Mercury Mountaineer?
A:
The pressure cycling switch, detecting low refrigerant line pressure at 21-27 psi, turns the A/C Compressor off and on again at 42 psi. If pressure exceeds 455-495 psi, the high-pressure cut-off switch near the compressor turns it off. To replace, disconnect the electrical connector and unscrew the switch from the Schrader valve. No need to discharge the A/C system. Lubricate the switch O-ring with clean refrigerant oil, screw the new switch until hand tight, then secure it. Reconnect the electrical connector.