Four Seasons 36676 A/C Clutch Cycle Switch

Four Seasons 36676 Pressure Switch

The Four Seasons Pressure Switch, part number 36676, is an A/C clutch cycle switch built for system-mounted HVAC control. It uses a 2-terminal blade connection, a rectangular connector shape, and a black plastic/metal housing for direct replacement service on supported Ford, Lincoln, Mazda, and Mercury applications.

Four Seasons Pressure Switch line components are built for accurate pressure-based cycling in automotive air conditioning systems. This 12-volt switch meets or exceeds OEM requirements and uses a female 7/16 in. x 20 fitting with Weather Pack sealing for dependable electrical and refrigerant-system connection.

Key Features

• Part number 36676 A/C clutch cycle switch
• Pressure-type, cycling-style system mount switch
• 2 terminals with male blade terminals
• Rectangular connector shape with Weather Pack sealing
• Black plastic and metal construction
• 12-volt electrical design
• Female fitting with 7/16 in. x 20 thread size
• Meets or exceeds OEM specifications
• Open at 0 psi
• Low-off pressure: 26 psi; low-on pressure: 47 psi

Detailed Description

Four Seasons 36676 is a pressure switch used in A/C clutch cycling circuits to help regulate compressor operation based on refrigerant pressure. It is listed for R134a-equipped Ford, Lincoln, Mazda, and Mercury vehicles, including applications such as Ford F-150, Ford Bronco, Ford Taurus, Lincoln Town Car, and Mercury Sable. This part cross-references BBB Industries 13660 for the same application.

With a system-mount design, this switch is suited for vehicles that require a pressure-actuated cycling control on the HVAC system. The 36676 part number is also referenced across multiple interchange numbers, making it a practical replacement choice when matching the original pressure switch configuration.

What It Helps Address

• A/C compressor clutch cycling that is inconsistent or inoperative
• Pressure-switch faults in R134a retrofit or R134a-equipped systems
• Compressor engagement issues tied to low-side pressure control
• Electrical connection problems at the HVAC pressure switch
• Replacement needs for aging Ford, Lincoln, Mazda, and Mercury HVAC systems

Installation Notes and Tips

Verify the connector shape, terminal count, thread size, and pressure settings before installation. Confirm the vehicle uses the listed R134a application and compare the original switch to the 7/16 in. x 20 female fitting and 2-terminal blade layout. For best results, inspect the HVAC system for refrigerant charge issues or wiring damage before replacing the switch.

Compatible With 1980-1993 Ford F-150, 1980-1993 Ford Bronco, 1990-1993 Ford Taurus, 1982-1993 Lincoln Town Car, and 1986-1993 Mercury Sable applications listed in the fitment data.

Quality Assurance

This Four Seasons pressure switch is manufactured to meet or exceed OEM requirements for the listed applications. Part number 36676 is built for direct-fit service on supported vehicles and HVAC systems.