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There is no such thing , What code do you have if any ? There is a purge solenoid for the EVAP system ! evaporative emission system. An there is a vent solenoid , a fuel tank pressure (FTP) sensor.
The evaporative emission (EVAP) control system limits fuel vapors from escaping into the atmosphere. Fuel tank vapors are allowed to move from the fuel tank, due to pressure in the tank, through the vapor pipe, into the EVAP canister. Carbon in the canister absorbs and stores the fuel vapors. Excess pressure is vented through the vent line and EVAP vent valve to atmosphere. The EVAP canister stores the fuel vapors until the engine is able to use them. At an appropriate time, the control module will command the EVAP purge valve ON, open, allowing engine vacuum to be applied to the EVAP canister. With the EVAP vent valve OFF, open, fresh air will be drawn through the valve and vent line to the EVAP canister. Fresh air is drawn through the canister, pulling fuel vapors from the carbon. The air/fuel vapor mixture continues through the EVAP purge pipe and EVAP purge valve into the intake manifold to be consumed during normal combustion. The control module uses several tests to determine if the EVAP system is leaking.
Vent solenoids there are 2 one on the intake manifold and one on top of the gas tank usually on top of the fuel pump module, the purge solenoid is located on or near the charcoal canister which is underneath the vehicle mounted by the gas tank
Hello have a 2006 Isuzu I-280 and I needed to replace, at this moment, the Evaporative Valve Soleniod which is instaled next to the Vapor Canister. In my case, It is mounted on the frame behind the gas tank you will have to move the spare tire out of the way one bolt holds it in place, this is where the canister is and the valve is mounted on the canister this is where it is mounted on my 2006 I-280. If you need to replace the solenoid and you can't find the original Isuzu part, you can ask for the 2006 Chevy Impala V-6 3.5 Purge Valve Solenoid. It is the same piece. The old Evaporative Vent Valve Solenoid has a number part PA-GF30, and it is the same part number I found in the new Chevy Impala Evaporative Vent Valve Solenoid. Good luck.
The solenoid for the purge vent valve is located near the vapor recovery carbon canister, a diagram of the location of the carbon canister is located under the hood on the emission sticker.
When this happens it is usually the canister purge solenoid stuck open. This solenoid/valve is normally closed. It only opens when the vehicle is on the road to open and allow the vapors stored in the carbon canister to be burned in the engine. If it is stuck open it allows the vapors when you are filling to enter the engine and flood it out with the vapor. This valve will need to be replaced. It is under the hood but I will need to know which engine is in your Envoy and if it is 2 or 4 wheel drive. Leave this information to me in a comment here and I will try to find you a location Diagram.
On your Jimmy there is a solenoid that controls fuel vapor emissions. When filling the vehicle this solenoid called the "canister vent valve" should be open allowing the vapors to reach the carbon canister where these vapors are stored to be burned later. These solenoids can seize closed and not allow the tank to vent properly. This solenoid will need to be replaced. It is mounted above and ahead of the spare tire so the tire will need to be removed to gain access to it. After you remove the spare it is only a matter of disconnecting a couple of hoses and a wire connector then removing the valve. There you are, thank you for using FixYa.
The vapor canister purge solenoid is on the left side of the motor about in the middle just bellow the intake manifold.It might be hard to see from obove the engine.You might be able to get a better look from behind the drivers side front wheel.Hope this helps.Good luck.
Continuous Memory Diagnostic Trouble Code (DTC) P0442 indicates that a fuel
vapor leak has been detected [as small as 0.10 cm (0.04 inch)] in the
Evaporative Emission (EVAP) system. Note: Prior to performing the following diagnosis inspect the Canister
Vent Solenoid (CV) for contamination. A situation may exist where contamination
holds open the Canister Vent (CV) solenoid enough to set DTC P0442 and also
plugs the port to atmosphere enough to keep system from being vented quickly.
After market parts and accessories nonconforming to the EVAP system
specifications.
Damaged, cross threaded or loosely installed fuel filler cap.
Small holes or cuts in fuel vapor hoses/tubes (EVAP canister tube, EVAP
canister outlet tube or EVAP return tube) in the EVAP system.
Loose fuel vapor hose/tube connections to EVAP system components.
EVAP system component [EVAP canister purge valve, fuel tank pressure (FTP)
sensor, canister vent (CV) solenoid, fuel vapor control valve tube assembly or
fuel vapor vent valve assembly] seals leaking.
CV solenoid partially open when commanded closed.
EVAP canister leaking.
Check for presence of fuel filler cap.
Verify that the CV solenoid is properly seated on the EVAP canister (if
possible).
Visually inspect for cut or loose connections to fuel vapor hoses/tubes in
following locations:
EVAP canister to EVAP canister purge valve.
EVAP canister to fuel vapor vent valve assembly.
fuel vapor control valve tube assembly to fuel tank (if applicable).
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