Four Seasons 36661 A/C Condenser Fan Switch

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

The Four Seasons Pressure Switch part number 36661 is designed to maintain optimal A/C condenser fan operation in select Buick, Oldsmobile, and Pontiac models. This system-mounted pressure switch ensures your vehicle's air conditioning system functions efficiently by controlling fan activation based on refrigerant pressure.

• Pressure switch with 2 male terminals for secure electrical connection
• Fitting thread size of 3/8 in. x 24 for precise system mounting
• Operates between 100 psi (off) and 150 psi (on) to regulate fan activity
• Constructed from durable plastic and metal materials for longevity
• Compatible with Buick LeSabre, Oldsmobile Delta 88, Pontiac Bonneville, and Custom Cruiser models
• Includes harness connector 37227 and item 24606 for installation

About the Four Seasons Pressure Switch Product Line

The Four Seasons Pressure Switch line focuses on pressure-activated components designed to regulate HVAC system performance. The Pressure Switch 36661 is engineered to meet or exceed OEM specifications, providing reliable fan control by monitoring refrigerant pressure levels. This ensures proper condenser fan cycling, which is critical for maintaining system pressure and preventing overheating in the A/C system.

Product Details and Specifications

This A/C condenser fan switch features a pressure style design with a system-mounted location, making it compatible with specific GM vehicles including Buick, Oldsmobile, and Pontiac models such as the LeSabre, Delta 88, Bonneville, and Custom Cruiser. The switch has two male terminals for electrical connection and a 3/8 in. x 24 fitting thread size for secure installation. It operates by opening the fan circuit at 100 psi and closing it at 150 psi, ensuring the condenser fan runs only when necessary to maintain optimal system pressure. The combination of plastic and metal materials provides durability and resistance to typical automotive environmental conditions.

Common Applications and Issues Addressed

• Prevents A/C condenser fan from running continuously, reducing wear and energy consumption
• Helps avoid overheating of the A/C system by activating the fan at correct pressure levels
• Resolves intermittent or non-functioning condenser fan issues in compatible Buick, Oldsmobile, and Pontiac vehicles
• Maintains proper refrigerant pressure for efficient air conditioning performance
• Eliminates electrical faults caused by faulty pressure switch connections

Installation Notes and Tips

When installing the Four Seasons Pressure Switch 36661, ensure the system is depressurized and the vehicle is off. The switch mounts directly to the A/C system using the 3/8 in. x 24 fitting thread. Connect the two male terminals securely to the harness connector 37227 included with the part. Verify the switch is oriented correctly to maintain accurate pressure readings. After installation, test the A/C system to confirm the condenser fan activates between 100 psi and 150 psi as specified.

Quality Assurance and Warranty

The Four Seasons Pressure Switch 36661 meets or exceeds OEM standards for fit, form, and function. Manufactured with quality plastic and metal components, this switch is designed for durability and reliable performance. Four Seasons provides a limited warranty on this part, ensuring coverage against defects in materials and workmanship under normal use conditions.