Check Gas Cap with P0440 Evap Emission System Code on my - Page 3 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


2000-2005 Discuss your 2000-2005 Bonneville SE, SLE, and SSEi Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 05-18-2006, 08:27 AM   #21
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It feels good to find something like that on your own, doesn't it Dave?
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Old 06-11-2006, 01:03 AM   #22
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Default P0440 Code on my 2001 SSEi

Looks like I finally found the problem. I replaced the EVAP Purge Valve, located on the engine, and it has been code free for six days now. I was starting to just replace the most likely parts and the first one I replaced was the one that fixed it.
The EVAP Vent Valve, located by the canister at the rear of the vehicle, was going to be the second one that I would have replaced. The third one would have been the EVAP Solenoid located on the canister itself.
I am crossing my fingers though, because it came back seven days after seating the line on the canister. The line actually pushed in about a half inch and made a clicking sound so I thought I had the problem licked.
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Old 06-11-2006, 05:55 AM   #23
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Dave, glad to hear you resolved the problem. What failed on the purge solenoid valve, just curious?
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