sirtokesalot Posted December 13, 2016 Share Posted December 13, 2016 I've had my 98 outback on the road about 700 miles now since the engine swap using a 95 legacy 2.2 motor. The p0440 code has come up 3 times now resetting it each time it just comes back a few hundred miles later each time. What do I need to look at? When I open my gas cap the woosh sound is not present like it was on the 95. Quote Link to comment Share on other sites More sharing options...
sirtokesalot Posted December 13, 2016 Author Share Posted December 13, 2016 Not sure why 3 posts occoured. Please delete the other 2 my phone posted too much Quote Link to comment Share on other sites More sharing options...
1 Lucky Texan Posted December 13, 2016 Share Posted December 13, 2016 possible hole in the filler neck - often, older soobs have serious rust on the other side of that the plastic cover. Quote Link to comment Share on other sites More sharing options...
Rooster2 Posted December 13, 2016 Share Posted December 13, 2016 I have same problem with my 98 ObW. I replaced the filler neck, but still must have a vacuum leak somewhere in the gas tank system. It could also be a bad gas cap that is not holding a vacuum. Tracing down that code and fixing it is pretty much trial and error. As mentioned earlier, it could very well be a leak in the filler neck. Salt and crud builds up between the filer neck and the plastic shroud that covers it. I replaced my filler neck, and threw away the shroud, as I did not think it worth the trouble to replace it. 1 Quote Link to comment Share on other sites More sharing options...
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