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Canister purge valve is located under the air cleaner assembly, remove the aircleaner and the airintake hose, remove air filter, underneath in air cleaner housing are 2 7/16 nuts,remove and take housing out. canister is underneath. valve closes to canister is the purge solenoid.
Raise the hood. On the right side should be a sticker that show you. Next to the canister with a plug on top of it.
it is on the top of the engine right by the fuel rail on the right side of the car right next to the throtle body
locate it next to engine
also referred to as the Vapor Canister Purge Valve and is in\on the charcoal evaporator canister. its under the floor above the spare tire location, locate the charcoal canister on the front of the gas tank and trace the vent line to the vent valve.
next to the oil cap
Evaporative Canister Purge Volume Control Valve
"EVAP System Flow During Non Purge" Most likely the purge solenoid is stuck open. If it is the 4.3 engine the purge solenoid is located on the right side of the intake manifold.
P1445 EVAP Canister Purge Volume Control Valve
On a 2.2 its on the backside of the engine below the intake manifold......
First you have to remove the air filter housing, to see the carbon canister with hoses. The canister is oval, from top view. There are two evaporative emissions devices that connect to this canister. One is the Purge Valve Sensor, it is like a one inch black box with wire connectors and two connectors for tube on top. The other is the evaporative emissiong purge soleniod. It is usually a white plastic cylinder, about 2 inches long and also with two connectors for tubing. Make sure you make note of the correct direction of the two tubes when replacing or cleaning. The solenoid will show an arrow indicating direction to motor.
Under the truck, along the driver side frame rail.