Evap Purge Flow fault

Best to take to dealer or trusted mechanic and get system fixed. There are solenoids that open/close to move tank fumes back to intake, one or more of the solenoids is not working causing code.

Hello, I got the dignostic test on my car and it says Evaporative Emission System Large Leak detected code P0455A. Someone told me it could be the gas cap...im so broke its not even funny...so i really hope its the gas cap....what do you think??

You probably have one of the following:

- loose/defective gas cap: (retighten it, clear the code and drive the car around; hopefully that's all it needs).
- leak in EVAP system: you may have a loose hose, something wrong with the canister or the vent valve is stuck open (this valve is behind the gas tank; try to tap on it gently; it may release it).

OMG I think we are kindred spirits! I have the same car checy cavalier,same year 2005 and same exact code! AND I am as broke as the 10 commandments! Hope and pray it is the gas cap! Dis you ever find out???

Engine Performance problem
2003 Chevy Cavalier 6 cyl Front Wheel Drive 65000 miles

trying to locate where the evap selinoid and evap canister is located

Is this car a 6 cyl ? Not sure they offered one that year.
please check year and engine size, then I'll be glad to help.

my car is a 4 cyl.

Thanks for that info...
the purge soleniod is located next to the power steering pump on the right side of the engine on the top.

The evap vent soleniod in located in the evap canister which is located in back of the fuel tank in the rear of the vehicle just above the rear axle.

Hope this helps, any more questions, just ask.

Evaporative Emission Control System Malfunction
What does this code mean exactly this was the code it read p0440 ?

evaporative emission (EVAP) system has a large leak.
Check the gas cap or vent valve. these are the most common problems

Thx, It turned out 2 be the gas cap. I got 1 for 6 $ @ murrays cheacked the code and it still had a problem so i returned it and got a dealer one and that did the trick.31.00$ for this 1 but quality worked...

where is the purge/vent solenoid on and what is the easiest way to change it?

According to the manual it is on the side of the engine, above the oil filter under the exhaust manifold, , be sure to check the hose going to it for damage as well. Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.