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Ran out of gas, CE light flashed. Should it? S90-V90 1997

uid 11021's pic
posted by  dewfpo on  Sun Jan 14 05:23 CST 2007
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last visit: Thu Oct 23 18:34 CST 2014
[RELATED]

The charcoal canister is designed to temporarily store HC (gasoline) vapors, not liquid. The HC's adsorb to the surface of the carbon granules. This is a temproary habitation. When the ECM determines the engine is ready to handle these HC vapors, air/vacuum is drawn thru the charcoal canister and the carbon happily gives up the HC molecules into the air stream running thru it and then it is burned in the engine. The charcoal canister is essentiall 'cleaned' all the time by the ECM thru the use of the valve that the dealer said they replaced. The charcoal granules have a limited amount of surface area just like anything else and once the entire surface is covered with HC's, no more is stored.

DEWFPO
--
1998 S90 077,400 and 1995 964 154,100






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