Four Seasons 36666 A/C Condenser Fan Switch

Reliable A/C Condenser Fan Switch for Buick, Oldsmobile, Pontiac

The Four Seasons Pressure Switch part number 36666 is designed to maintain optimal air conditioning system performance in select Buick, Oldsmobile, and Pontiac vehicles. This system-mounted pressure switch ensures proper condenser fan operation by monitoring refrigerant pressure levels.

• Connector color: Green for easy identification
• Two male terminals for secure electrical connection
• 3/8 in. x 24 fitting thread size for precise system mounting
• Operates between 175 psi (off) and 220 psi (on) for accurate fan control
• Constructed from durable plastic and metal materials
• Compatible harness connector: 37227
• Includes one item 24606 as part of the package
• Meets or exceeds OEM specifications

About the Four Seasons Pressure Switch Product Line

The Pressure Switch line from Four Seasons focuses on pressure-activated components that regulate HVAC system functions. This A/C condenser fan switch is part of that line, providing reliable pressure sensing to control the condenser fan operation. It is engineered to meet OEM standards, ensuring compatibility and performance in the specified vehicle models.

Detailed Product Description

The Four Seasons 36666 A/C condenser fan switch is a pressure-activated system mount switch designed to open the fan circuit when refrigerant pressure reaches 220 psi and close it at 175 psi. This precise operation helps maintain proper cooling system function and prevents overheating. The switch features a green connector with two male terminals, making installation straightforward. Its 3/8 in. x 24 fitting thread size ensures a secure fit in the HVAC system. Constructed from a combination of plastic and metal, this switch offers durability and reliable performance in Buick 88, Buick 98, Oldsmobile Custom Cruiser, Pontiac Bonneville, LeSabre, and Park Avenue models.

Common Applications and Issues Addressed

• Prevents condenser fan from running continuously or not running at all
• Helps avoid A/C system overheating due to improper fan activation
• Ensures efficient air conditioning performance in Buick, Oldsmobile, and Pontiac vehicles
• Resolves intermittent fan operation caused by faulty pressure switches
• Maintains proper refrigerant pressure control for system longevity

Installation Notes and Tips

When installing the Four Seasons 36666 pressure switch, ensure the system is depressurized and the vehicle is off. The switch mounts directly to the system using the 3/8 in. x 24 thread fitting. Connect the green male terminals securely to the harness connector 37227. Verify the switch operates within the specified pressure range (175 psi off, 220 psi on) after installation. Proper torque and sealing are important to prevent leaks and ensure accurate pressure sensing.

Quality Assurance and Warranty

This Four Seasons Pressure Switch meets or exceeds OEM specifications for fit, form, and function. Manufactured with quality plastic and metal components, it is designed for durability and reliable operation. The product includes a warranty that covers defects in material and workmanship, providing confidence in its long-term performance for Buick, Oldsmobile, and Pontiac HVAC systems.