Dorman 994-140 Vapor Canister Purge Valve

Overview of Dorman Vapor Canister Purge Valve 994-140

The Dorman Vapor Canister Purge Valve 994-140 is designed for emission control systems in select Ford and Lincoln vehicles. This valve plays a critical role in managing fuel vapor flow, helping maintain optimal engine performance and reduce harmful emissions.

• Compatible with Ford Expedition, F-150, Transit-150, Transit-250, Transit-350, Transit-350 HD, and Lincoln Navigator
• Two vacuum ports with outside diameters of 10 mm and 15 mm
• Connector hose inside diameter of 9.95 mm for secure fitment
• Durable housing constructed from a combination of metal and plastic materials
• Features one female rectangular connector with two blade terminals
• Includes mounting hardware for straightforward installation
• Part number 994-140 ensures precise replacement

Technical Details and Specifications

The Dorman 994-140 vapor canister purge valve features two ports with outside diameters of 10 mm and 15 mm, designed to connect seamlessly with the vehicle’s evaporative system hoses. The connector hose inside diameter measures 9.95 mm, providing a tight seal to prevent vapor leaks. The valve includes a single female rectangular connector equipped with two blade terminals (male), ensuring reliable electrical connectivity. The housing combines metal and plastic components to balance durability and corrosion resistance. Additionally, the valve has two vacuum ports and a mounting hole diameter of 8.25 mm, facilitating secure attachment within the engine bay.

Applications and Common Issues Addressed

• Prevents fuel vapor leaks that can trigger the check engine light
• Helps maintain proper fuel vapor flow for efficient engine operation
• Reduces evaporative emissions to comply with environmental regulations
• Resolves rough idling or stalling caused by faulty purge valves
• Improves fuel economy by ensuring correct vapor purge timing

Installation Notes and Tips

When installing the Dorman 994-140 vapor canister purge valve, verify compatibility with your specific Ford or Lincoln model, including Expedition, F-150, Navigator, or Transit series. Ensure the vacuum ports and electrical connector align correctly with the vehicle’s evaporative system hoses and wiring harness. Use the included mounting hardware to secure the valve firmly, preventing vibration or disconnection. It is recommended to inspect surrounding hoses and connectors for wear or damage during installation to maintain system integrity.

Quality Assurance and Warranty

Dorman parts are engineered to meet or exceed OEM specifications for fit, form, and function. The 994-140 vapor canister purge valve undergoes rigorous testing to ensure durability and reliable performance in emission control applications. This part is backed by Dorman’s standard warranty, providing coverage against defects in materials and workmanship for a specified period. Refer to Dorman’s warranty documentation for detailed terms and conditions.