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0440 and 0441 are back again!

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Old 02 Sep 2016, 03:40 pm
Join Date: May 2016
Posts: 9
Default 0440 and 0441 are back again!

After I thought I solved the dreaded EVAP codes, they come back again lol. 4 months ago I replaced the NVLD and the codes did not come back until today. The car was taken for emissions last week and passed no problem. Tells me no reason replace the fuel cap(original). Other than replacing the fuel filter i cant see what else it could be. I don't see any way possible that there is an actual "leak" in the lines. If there was a true leak then the code would not have gone away for so long?!? Any info is greatly appreciated.
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Old 03 Sep 2016, 09:35 am
Cool Cruiser
Join Date: Feb 2014
Posts: 298
Default Re: 0440 and 0441 are back again!

without doing a smoke test or check if all the solenoids and purge valves are working (dealer type scanner) it will be very hard to find.

Other than the gas cap check the gas intake around the gas cap and make sure it is clean and no rust. You can have a good cap and if it does not make a good seal it will leak.

You can also check the rubber lines going to the canister make sure they look good no cracks.

This is very hard for the dyi'er

Good luck

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Old 03 Sep 2016, 10:12 am
Join Date: May 2016
Posts: 9
Default Re: 0440 and 0441 are back again!

thanks for the reply mike. When i changed the NVLD i dropped the tank enough to see the hoses there on the passenger side and they seemed in good shape to me(soft and no cracks). I forgot to mention that this code comes and goes on its own lol. I might try to get new cap from the dealer and see if that helps. Other than that we aren't throwing any more of our money into this car. These cars are the hardest to deal with for maintenance. I had to take out engine mounts to change a timing belt lol. In 12 months or so this car should be for sale!!
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Old 03 Sep 2016, 12:01 pm
Obsessed Cruiser
Join Date: Aug 2014
Location: Thousand Oaks, CA
Posts: 7,473
Default Re: 0440 and 0441 are back again!

Did you check the filter?

NVLD fuel tak assembly filter.jpg
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