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P0440 and P0441 Replaced everything I can think of...now what?

 
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Old 07 Mar 2017, 02:11 pm
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Default P0440 and P0441 Replaced everything I can think of...now what?

So I've been struggling with these two codes now for a couple years. It's now time to get the car inspected again and I'm still having issues. I've replaced the NVLD, Evap Canister, purge valve solenoid, and gas cap. I had a buddy do a smoke test and seems that when the car is off that the smoke is coming from the filter that is connected to the NVLD. When off should the NVLD be closed and blocking the smoke from coming out there? Do we need to clamp that line before smoke testing? We did drop the gas tank and clamped the line and smoke tested and did not find any leaks. Found a spot worn in the wire connector going to the system, seems it had water in that section, cut it out and replaced that section of wire. It has us both stumped.
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Old 07 Mar 2017, 02:58 pm
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Default Re: P0440 and P0441 Replaced everything I can think of...now what?

When you find out the answer to this I'd love to know it. I get a P0441 about every 4 days, on average. Seems it pops the code more frequent when the tank is full. Might be my imagination. So far all I've done is replace the gas cap.
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Old 07 Mar 2017, 03:04 pm
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Default Re: P0440 and P0441 Replaced everything I can think of...now what?

read here, first post, where it reads "turns out the filler"

P0455 Major Evap Leak Major issue
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Old 08 Mar 2017, 12:47 pm
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Default Re: P0440 and P0441 Replaced everything I can think of...now what?

Seems that after replacing the bad wire, nvld, purge valve solenoid, and gas cap, I'm now only getting the P0440 code. Going to see about checking the filler neck as suggested. This thing is frustrating.
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