Evaporative Emission Canister Purge Valve

A typical evaporative emission canister purge valve (EVAP canister purge valve) (9C915) is shown in the following illustration. The evaporative emission canister purge valve is located in the vapor tube between the evaporative emissions canister (EVAP canister) (9D653) and the throttle body (9E926), and is normally in the closed position until electrically energized.

The operation of the evaporative emission canister purge valve is controlled by the powertrain control module (PCM) (12A650). When the engine (6007) is off, the evaporative emission canister purge valve is not energized and is in a closed, nonflowing condition. When the engine is running, the powertrain control module reads engine rpm, engine load, engine temperature and other variables, and decides the proper time for the engine to accept fuel vapors. When this occurs, the powertrain control module energizes the evaporative emission canister purge valve, allowing flow from the evaporative emissions canister to the intake manifold. The vapors are then consumed in the engine. This action purges the evaporative emissions canister of fuel vapors. It occurs as fresh air is sucked into the evaporative emissions canister under the fresh air inlet cap of the evaporative emissions canister and through the activated carbon bed. This allows the stored fuel vapors to pass from the evaporative emissions canister through the evaporative emission return tube (9G271) and the evaporative emission canister purge valve, and into the engine.

The 5.0L engines utilizes a fuel vapor management valve (VMV). The vapor management valve (VMV) functions in a manner similar to that of the evaporative emission canister purge valve.

Fuel Vapor Canister Purge Regulator Valve






Fuel Vapor Management Valve (VMV), 5.0L Engine

Item	Part Number	Description
1	9C987	Fuel Vapor Return Hose and Valve Assembly
2	9C915	Vapor Management Valve
3	—	Hose (Purge Valve-to-Throttle Body, Part of 9C987)
4	9E926	Throttle Body
5	9D653	Evaporative Emissions Canister
6	—	Fender Apron
7	9A220	Fuel Vapor Return Connector Assembly
8	N800369-S2	Screw, M6.3-1.81 x 16
9	—	Evaporative Tube (Refer to Vapor Line Installation Illustrations in This Section)
10	9G271	Evaporative Emission Return Tube
11	9D664	Fuel Bracket
A	—	Tighten to 5-7 Nm (44-62 Lb-In)
B	—	Route on Fender Side of Secondary Air Injection Supply Pump Inlet Hose