Question about 2007 Chevrolet Uplander

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Hi can i change places the vent selenoide so that it will be easier for me to reach it again..

I have alot of hoses can i put it far away from the evap canister thank you have a good day.denis email devoydenis@gmail.com

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  • Denis Devoy
    Denis Devoy Apr 24, 2015

    Hi there my evap vent selenoide is on my gas thank can i change it place put it far away from the evap canister

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

  • 37 Answers

SOURCE: HAVE A TROUBLESHOOTING MESSAGE PO446

DTC P0446 Evaporative Emission (EVAP) Vent System Performance

The vehicle control module (VCM) monitors the performance of the evaporative emission (EVAP) system by applying a predetermined level of vacuum to the EVAP system and monitors the vacuum decay rate. The VCM sets this diagnostic trouble code (DTC) if the vacuum decay rate is more than a predetermined value. The VCM monitors the amount of vacuum and the amount of pressure in the EVAP system by monitoring the fuel tank pressure sensor. For this DTC, the VCM turns ON both the EVAP purge valve and the EVAP vent valve when the Conditions for Running the DTC are met. This applies an engine vacuum to a closed EVAP system. The VCM turns OFF both the EVAP purge valve and the EVAP vent valve when the system reaches a correct amount of vacuum. The EVAP system should quickly RELEASE the vacuum in the EVAP system with the EVAP purge valve OFF and the EVAP vent valve OFF (open). This test indicates a blocked or restricted EVAP vent path if the EVAP system fails to release the vacuum quickly enough.

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Posted on Dec 06, 2008

matney68
  • 426 Answers

SOURCE: Looking for the evap canister vent valve on a 2006 Silverado

if you look underneath the vehicle on drivers side in the area beneath drivers you with see a plastic rectangular sort of shaped box this is evap canister and vent valve is there in this area.

Posted on Jun 20, 2009

  • 86 Answers

SOURCE: My check engine light on my 2006 Chevy Equinox

I would bring it back to the shop that did the work. If the code is coming out as a problem with the evap system it is not abnormal for the system to take 2 or 3 days for it to read again.

Posted on Mar 30, 2010

  • 37 Answers

SOURCE: 2004 Chevy Cavalier 2.2 eco Automatic 94,000 miles

in my experience the usual culprit is the evap cannister. the problem is it gets moisture in it and freezes during winter thus cracking the plastic. if you lay under the car and look at the evap box it black plastic and if you see a loose or cracked hose or the box itself is cracked that is most likely it. as a side note you can check the gas cap and buy a new one to see if that rectifies the situation. lastly i don't think the gas tank should be suspect as you would probably notice if gas was leaking out of the tank. if you take the car to a dealer or shop they can do a smoke test and determine where the leak is.

Posted on Oct 19, 2010

SOURCE: The troubleshooting code is po440. It says the

A leak in the EVAP system can be a pain to resolve so be methodical. Start with the junction of the tube from the purge valve to the inlet manifold plenum. Disconnect this tube and block off the exposed port on the manifold. A great way for blocking off tubes and ports is to cut off the fingers of a rubber washing up glove and elastic bands to secure them over the exposed ends. First let us recap on the system. The EVAP system passively stores fuel vapour from the fuel tank in a charcoal filled canister. The canister can be located on the fender or bulkhead. When the engine is running above idle speed the ECU opens a purge valve connecting a pipe to the throttle body. A corresponding vent valve allows the ingress of air into the canister and this encourages fuel vapour to be drawn out of the canister through the purge valve to the throttle air intake mixture and thereafter to be burnt. The opening of the purge valve cycles with engine speed. The purge valve should be closed during idle. A faulty EVAP system manifest itself as erratic idling as it allows un-metered air into the system and compromises the inlet manifold vacuum. The blocking of the ports as initially suggested above should at least cause any erratic idling to be resolved. The EVAP system is not critical to engine performance, it is an emission control device, so the car may be run without issue until the fault is found. Look at the fuel cap, ensure that the rubber seal is intact. To make doubly sure give it a smear of grease. Next look at the disconnected 'purge valve to throttle' tube. Inspect it thoroughly for cracks, be quite rough and twist it around to get a good look. Now locate the purge valve. If it is electrically operated simply check for voltage continuity across its connector pins. An open circuit indicates a burnt out solenoid winding. Check the connection to the canister. Check the vent valve connections, and again check its electrical continuity. Check the tank to canister tubing and any connections. If you find no leaks you may need to take it to a garage that can do a smoke test on the system - this highlights the leaks as wisps of smoke appear where the leaks occur.

Posted on Dec 01, 2010

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1 Answer

Hi my evap vent selenoid is un top of the gas tank can i change it place and put it far away from the evap canister thank you...


If the vent is separate from the solenoid yes you can move it. I use heater hose to go between the solenoid and the vent. Just try and mount it somewhere the dust and dirt wont get to it.

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Hi, your EVAP vent valve is likely stuck closed. The valve is under the car near the fuel tank. Remove the valve and check to see if it's stuck. You may be able to restore operation by cleaning the valve with carb cleaner. The valve should be open when no voltage is applied. I have pasted instructions below from autozone.com. Please let me know if you have any questions, and thanks for using FixYa.
jturcotte_1546.gif Vent Solenoid Valve
2.2L & 2.4L Engines

  1. Raise the vehicle
  2. Loosen the EVAP canister vent valve hose clamp and slide the clamp down the hose away from the EVAP vent valve hose connection.
  3. Remove the hose from the EVAP canister vent valve.
  4. Remove the EVAP canister vent valve by placing a pry bar between the valve and mounting surface, and moving the valve forward.
  5. Remove the clip from the EVAP canister vent valve harness connector
  6. Disconnect the EVAP canister vent valve harness connector.

To install:
  1. Connect the EVAP canister vent valve harness connector
  2. Install the clip into the EVAP canister vent valve harness connector.
  3. Install the EVAP canister vent valve by pushing the mounts into the original holes.
  4. Lubricate the hose end with lubricant.
  5. Install the hose to the EVAP canister vent valve.
  6. Slide the EVAP canister vent valve hose clamp down on to the hose connection at the EVAP canister vent valve.
  7. Lower the vehicle.

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I'm assuming you already dropped the tank (as far as it will go), managed to get the right side of it down past the exhaust so you could reach up to remove the fuel lines, unplug the top vents and fuel plugs. Now the fun part.

Just getting the clamps loose is a testament to your patience and dexterity. The filler hose isn't too bad to get off one side or the other.
I've handled the vent tube in one of two ways. It depends on how stubborn it is.

Vice grips and patient twisting. Working it off. This can take a while and damage the tube requiring replacement.

Save time. Cut the tube, replace it and save yourself the cramped forearms.

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