Fuel Pressure Relief Valve

Engine Control Components - Exploded View





Fuel Pressure Control Valve and Fuel Rail Pressure (FRP) Sensor

NOTE: The LH fender splash shield must be removed to access the fuel pressure control valve. For additional information, refer to Front End Body Panels Fender Splash Shield.

NOTE: Lubricate the O-ring seal(s) of the fuel pressure control valve and/or the sealing surface of the FRP sensor with clean engine oil prior to installation.

NOTE: Hold the fuel pressure control valve electrical connector in the desired orientation and tighten in 3 stages:
- Stage 1: Tighten to 60 Nm (44 lb-ft)
- Stage 2: Loosen 90 degrees
- Stage 3: Tighten to 85 Nm (63 lb-ft)









Fuel Volume Control Valve, Fuel Temperature Sensor and Fuel Pressure Switch

NOTE: The upper and lower intake manifolds must be removed to access the fuel volume control valve. For additional information, refer to Engine - 6.7L Diesel Service and Repair.

NOTE: Clean the sealing surface of the fuel temperature sensor fitting prior to installation of the fuel temperature sensor.

NOTE: Lubricate the O-ring seal(s) with clean engine oil prior to installation.

NOTE: Tighten the fuel volume control valve bolts alternately in 2 stages:
- Stage 1: Tighten to 3 Nm (27 lb-in)
- Stage 2: Tighten to 7 Nm (62 lb-in)









Removal and Installation

NOTICE: Do not use silicone based sprays or lubricants on any components installed onto or around the diesel exhaust system or intake air distribution and filtering system. Silicone reacts with the Nitrogen Oxides (NOx) sensor and may cause permanent damage to the NOx sensor.

NOTICE: Make sure the ignition switch is in the OFF position prior to working on the electronic engine controls or damage to the vehicle may occur.

1. Refer to the procedures and/or exploded views for any Warnings, Notices, Notes, Materials, Specifications, and Special Tools. Items in the exploded views may not be listed in order of removal.