got a po440 code
yup, thats a evaporative emmisions system thingy. I am told it could be a Gas cap problem. dont think so. is there a specific sensor I should be looking at?? I know it has to do with the canister, anybody got something specific?
Bob R
Bob R
Every time we get a code doesn't mean a sensor is defective.
The cheapest thing you can try and it could be the solution, get a new gas cap.
If the cap isn't on or tight enough it will cause the SES lite to illuminate. If you checked that it could be a defect in the sealing of the cap. It will take a couple of trips for the code to go away, but if it is the cap the light will go out on the next trip.
The cheapest thing you can try and it could be the solution, get a new gas cap.
If the cap isn't on or tight enough it will cause the SES lite to illuminate. If you checked that it could be a defect in the sealing of the cap. It will take a couple of trips for the code to go away, but if it is the cap the light will go out on the next trip.
I traced all the vacuum lines. Found a few that were questionable and
replaced them. when I finally got to the Charcoal canister (under the air filter and PCM) I think I found the culprit. one of the vacuum connectors just about disentegrated. THe light has gone out, so we will see
Bob R
replaced them. when I finally got to the Charcoal canister (under the air filter and PCM) I think I found the culprit. one of the vacuum connectors just about disentegrated. THe light has gone out, so we will see

Bob R
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