Question about 2007 Chevrolet Equinox LS New Cars
I can't seem to be able to remove the vent solenoid
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Posted on Jan 02, 2017
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.
Posted on Dec 06, 2008
SOURCE: Evap vent solenoid
If you don't replace, it the service engine light will stay on. You'll get used to the light (or you'll cover it up). Then when something else goes wrong, you wont know.
Posted on Sep 21, 2009
SOURCE: code 499 large evap leak
this is a common easily fixed problem if you have a 2000.00 dollar smoke tester and a good scanner without these good luck obd2 alowance for evap leaks is a .020 " hole without smoke not happening
find the big black can with vacume lines on it check the lines are tight not dried up the purge solonoid all the lines check the seal on your gas cap are good places too start but without smoke machine it will be alot of hit and miss
Posted on May 18, 2010
SOURCE: Where is the evap vent
Its in the rear frame area of the vehicle its mounted to the frame or a cross member between it there all a little differant location but close to the charcoal and fuel tank . They also have a filter inside them that can be cleaned . But the lines come from the tank eighter off the pump or more likely the rollover valve at the front of the tank and allwas gose to the characoal canaster . It works in conjuntion with the canaster purge valve on the intake manifold it takes the exess vaper from the fuel system stores it in the canster when the vent valves opens and then when the engine speed is high enough the purge valve opens sending the vapor the the intake manifold to be burned at the higher engine speed more demand for fuel condution
Posted on Aug 23, 2011
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Push down, while pulling up slightly in order the disengage the tube.
Disconnect the EVAP canister purge solenoid electrical connector (1).
Remove the EVAP canister purge solenoid bolt (2). Remove the EVAP canister purge solenoid (3) and insulator (1).
Sep 19, 2015 | Cars & Trucks
An EVAP canister, vent hose, or vent solenoid valve that has restricted flow may cause this DTC to set. Using a purge solenoid command with a scan tool will allow vacuum to be applied to the system instead of pressure. With the engine running, the EVAP canister vent solenoid valve open, and the EVAP canister purge solenoid valve commanded to 100 percent, the fuel tank vacuum should not increase to more than 5 inches H2O.
An EVAP canister filter that is restricted can cause this DTC to set. Refer to Evaporative Emission Canister Replacement .
Disconnecting one component at a time while the EVAP system is under flow will help to pinpoint a restriction in the system
Do you have a scan tool that reads data PID'S ?
Your FTP - fuel tank pressure sensor could be at fault !
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