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Registered
Join Date: Apr 2011
Location: Ellensburg WA
Posts: 143
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breather in fuel door cavity
In the front of the fuel filler is this vent or breather. What is it, what does it do? Yesterday I started hearing a harmonic noise and this was the source. The sound was intermittent like a pump turning on for ~ 10 seconds then off for 20-30 seconds. I covered it with my finger, it felt like suction. The sound would stop when covered.
Barry  
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11-02-2016, 10:34 AM
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Registered
Join Date: Apr 2011
Location: Ellensburg WA
Posts: 143
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Noticed a Porsche part # after posting. It led me to the carbon canister. Is that for the passenger cabin air or what? My main concern is what is causing the noise.
Barry |
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11-02-2016, 10:57 AM
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Join Date: Aug 2010
Location: Earth.............
Posts: 2,908
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It is part of the fuel system EVAP vapor control system. Leave it alone and do not annoy it.
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Accrochez-vous bien de vos rêves..........." |
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11-02-2016, 11:33 AM
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Registered
Join Date: Apr 2011
Location: Ellensburg WA
Posts: 143
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But it's anoying me. Hmmmm, drive faster make more road/wind/engine noise. Problem fixed.
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11-02-2016, 12:29 PM
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Join Date: Jan 2008
Location: NJ
Posts: 1,186
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Chances are that your *purge valve in the engine compartment is malfunctioning, lives above/behind the alternator. There is also another suspect valve that lives on your filler neck behind the fender liner. Pelican has a tech article on replacing that one.
http://www.pelicanparts.com/techarticles/Porsche-996-997-Carrera/106-FUEL-Replacing_Your_Fuel_Line_Vent_Valve/106-FUEL-Replacing_Your_Fuel_Line_Vent_Valve.htm When one or the other has a hard failure you will get a CEL. Most likely a P 0440 to p0455. * http://www.*********.com/gqk9vdn-porsche-911-purge-valve.html?utm_source=shoppingcom&utm_medium=pf&utm_content=sc&utm_campaign=*********+ShoppingCom&fp=pp&utm_term=Porsche+Purge+Valve
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2013 991.1 Carrera S Cab 2004 996 Turbo CAB X50 sold 2003 996 cab 6 speed Sold 1972 RS 3.2 twin plug short stroke crank fire, roll bar, sold DE instructor since 1985 Last edited by FPB111; 11-03-2016 at 03:39 PM.. |
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11-03-2016, 03:24 PM
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