There is a purge solenoid for the EVAP system and it is item no.# 1 shown in the diagram below. You have to follow the purge valve vacumn hose to find the charcoal cannister if you need to inspect.
I have included a description of the EVAP system for your understanding.
EVAPORATIVE EMISSION (EVAP) CONTROL SYSTEM
The EVAP and on-board refueling vapor recovery (ORVR) system consists of a fill vent valve, fuel shut-off valve, fuel cut (roll-over) valve, fuel liquid/vapor separator, EVAP canister, EVAP canister purge solenoid valve, EVAP canister close valve, vacuum relief filler cap, and connecting lines and hoses. ORVR system is designed to prevent the release of fuel vapors during refueling. During refueling, as fuel enters the fuel tank, a vacuum is created in filler pipe, drawing air into the filler pipe and tank. Fuel vapor in fuel tank is then forced to the EVAP canister via the fill vent valve and the fuel liquid/vapor separator. A fuel tank pressure sensor is used for detecting EVAP system leaks by comparing pressures inside and outside of fuel tank.
EVAP Canister Purge Solenoid Valve
Fuel vapors are vented into the EVAP canister during refueling and when ignition is off. When engine is at normal operating temperature and engine speed is greater than idle, a thermovalve opens and allows vacuum to open the purge control valve. Canister vapors are then drawn into the intake manifold for burning during combustion. The purge control valve is kept closed during idle and engine warm-up to reduce HC and CO emissions.
I guess that there is a failure belongs to the EVAP CONTROL SYSTEM of the engine. Check and replace if necessary the EVAP purge solenoid valve. Also check all EVAP hoses & connections, and the charcoal cannister too. Repair damages and reset the Engine Control Module (ECM) using diagnostic equipment connected to the data link connector of the car.
Let me know if problem still remains. I will assist you kindly.
Good Luck!
Best Regards!
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Inspection
1.
Look for loose connections, sharp bends or damage to the fuel vapor lines.
2.
Look for distortion, cracks or fuel leakage.
3.
After removing the EVAP canister, inspect for cracks or damage.
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Guru,
Thanks for the data..this is the best info I have been able to get on my problem....I keep getting a check engine light and every time it says check gas cap...after several gas caps from Hy.
and repeated resets of error it still comes up randomly...I was told possibly the purge valve..what would be your expert approach to resolving this headache?!? thx a bunch!
Thanks for the data purge solenoid, etc...very helpful....what would be your expert approach in resolving my check engine light coming on randomly and repeatedly with the code that says loose
gas cap.....six caps over the past year even ones from HY and resetting the light...haven't stopped this annoyance...
ANY advise would be greatly appreciated!
Thx
Wes
Thanks for the help!...shall do and let you know if and how things work out..
Thanks again.
wes
how to test purge solenoid valve
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