Standard Ignition PS-391 Engine Oil Pressure Switch

Reliable Engine Oil Pressure Switch for Ford, Lincoln, and Mercury

The Standard Ignition PS-391 Engine Oil Pressure Switch is designed to provide accurate oil pressure monitoring for select Ford, Lincoln, and Mercury vehicles. This switch ensures your engine's oil pressure is properly regulated, helping maintain optimal engine performance and longevity.

• Connector Gender: Female for secure connection
• Terminal Gender: Male screw-type terminal
• Single terminal design for straightforward installation
• Compatible with Ford Fusion, Lincoln MKZ, and Mercury Milan models
• Standard Ignition quality and durability

Product Details and Specifications

The PS-391 engine oil pressure switch features a female connector and a single male screw terminal, designed for reliable electrical contact and ease of installation. This configuration supports a secure and stable connection to the vehicle’s wiring harness, minimizing the risk of signal loss or failure. The single terminal type simplifies the replacement process, making it suitable for professional mechanics and experienced DIYers alike. Compatible with Ford Fusion, Lincoln MKZ, and Mercury Milan, this switch meets the specific requirements of these models to ensure proper engine oil pressure monitoring.

Applications and Common Issues Addressed

• Detects low or high engine oil pressure to prevent engine damage
• Replaces faulty or worn oil pressure switches causing inaccurate gauge readings
• Resolves oil pressure warning light malfunctions in Ford Fusion, Lincoln MKZ, and Mercury Milan
• Helps maintain engine health by ensuring accurate oil pressure signals
• Prevents engine performance issues related to oil pressure sensor failure

Installation Notes and Tips

When installing the PS-391 engine oil pressure switch, ensure the engine is cool to avoid burns. Disconnect the battery before removal to prevent electrical shorts. Use appropriate tools to remove the old switch and install the new one, tightening the screw terminal securely without over-torquing. Verify the female connector is fully seated to maintain a reliable electrical connection. After installation, check for oil leaks and confirm the oil pressure gauge or warning light functions correctly.

Quality Assurance and Warranty

Standard Ignition parts are manufactured to meet or exceed OEM specifications, providing dependable performance and durability. The PS-391 engine oil pressure switch undergoes rigorous quality control to ensure consistent operation. While specific warranty details may vary, Standard Ignition typically offers a limited warranty covering defects in material and workmanship. Consult product documentation or your supplier for exact warranty terms.