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Old 05-21-2009, 08:34 PM
canival36 canival36 is offline
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Join Date: May 2009
Posts: 2
Default Unknown parts

Hi, i just started working on my 99 ranger flex fuel, and i found a hose coming from my gast tank that leads to a smaller tank next to my spare, does any one know what that is (its really bothering me), did i mention it was diconected?
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Old 05-21-2009, 09:33 PM
Alon Alon is offline
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It is the evap canister

An evaporative canister is part of the evaporative system that is within the emission system. Hydrocarbons are a form of pollution that gasoline releases as it evaporates or after is is burned. While fuel is stored inside the tank, fumes build up and are retained inside this canister. The canister contains charcoal that absorbs the hydrocarbons. When the engine is started, a valve opens that allows fresh air to come in and purge the fumes (hydrocarbons) into the air intake and then into the combustion chamber for burning. I understand that more hydrocarbons are released into the atmosphere by leaving your fuel cap off, than what comes out of your tailpipe while the engine runs. If there is a leak anywhere in the evaporative system, such as a bad hose, canister leak or leaving the fuel cap loose, the check engine light will set.
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Old 05-22-2009, 06:57 AM
98blownranger 98blownranger is offline
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Join Date: Feb 2009
Posts: 718

yes it is the evap, you need it or you will get a CEL
Originally Posted by redrumedge View Post
98blown you should be an MD! that's the same stuff my doc asks and ur spot on man!!!
98 4.0 2wd-----supercharger fully build heads cam...all show with go......3 time world of wheels champ 5 time national winner

lots of ranger parts for sale leftovers from my 94/96
96 sitting on the frame, waiting to go lower

custom billet parts by me intake adapters and billet steps for the step sides

please sign my guestbook!!
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Old 06-08-2012, 02:25 PM
colonel D colonel D is offline
Join Date: May 2012
Posts: 32
Default Re:evaporative emission control cel codes

Hello does anyone know how to fix evaporative emission control leak check engine codes small and large PO 442 and PO 455? There is also an irritating tick tick tick noise seems to come from under the front to under door fender area on a 2000 3.0 V6. Thank you I know the original post is old but am having trouble creating new posts.
2000 Ford Ranger 4X4 regular cab step side XLT 3.0 V6 FFV Vulcan 8.8 with 4.10s
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Old 06-09-2012, 02:50 PM
03rangdang 03rangdang is offline
Join Date: Jun 2012
Posts: 108

PO455 is a large leak.
03 rider!
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