Dorman 904-610 HVAC Pressure Switch

Reliable HVAC Pressure Switch for Ford, Lincoln, Mazda, and Mercury Vehicles

The Dorman 904-610 HVAC Pressure Switch is engineered to maintain optimal air conditioning system performance in select Ford, Lincoln, Mazda, and Mercury models. Designed specifically for R134a refrigerant systems, this pressure switch ensures accurate pressure monitoring and system protection.

• Operates at 5 volts for consistent electrical performance
• Compatible with R134a refrigerant type
• Pressure limits: closes at 260 psi and opens at 475 psi
• Maximum pressure rating of 500 psi for durability
• Black round female connector with 3 male pin terminals
• Metal housing for enhanced strength and heat resistance
• Bolt-on mount type with 10 mm thread diameter
• Specific fit for various Ford, Lincoln, Mazda, and Mercury models

Technical Details and Compatibility

The Dorman 904-610 HVAC Pressure Switch is a vehicle-specific component designed to monitor refrigerant pressure within the air conditioning system. It features a metal housing that withstands high temperatures and mechanical stress, ensuring long-term reliability. The switch operates at 5 volts and is calibrated to close at 260 psi and open at 475 psi, protecting the system from pressure extremes. Its black round female connector with three male pin terminals facilitates secure electrical connections. This pressure switch is compatible with R134a refrigerant, commonly used in many late-model vehicles.

Compatible with a range of Ford, Lincoln, Mazda, and Mercury vehicles, including models such as the Ford F-150, Explorer, Mustang, and Expedition; Lincoln Continental, Navigator, and Town Car; Mazda Tribute and Mariner; and Mercury Mountaineer and Grand Marquis. The specific fitment ensures proper installation and function within these vehicles' HVAC systems.

Common Applications and Problem Resolution

• Prevents compressor damage by monitoring refrigerant pressure
• Helps avoid system shutdowns caused by abnormal pressure levels
• Ensures efficient air conditioning performance in Ford, Lincoln, Mazda, and Mercury vehicles
• Addresses issues related to inconsistent A/C cycling or no cooling
• Replaces faulty or worn pressure switches to restore system reliability

Installation Notes and Tips

• Designed for bolt-on installation with a 10 mm thread diameter
• Ensure the vehicle’s A/C system is depressurized before removal
• Verify connector compatibility and secure electrical connections
• Use appropriate tools to avoid damage to the metal housing or terminals
• Consult vehicle-specific service manuals for torque specifications and safety precautions

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards, providing reliable performance and durability. The 904-610 HVAC Pressure Switch undergoes rigorous quality control to ensure consistent operation under demanding conditions. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in material and workmanship. Refer to the product documentation for exact warranty terms.