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Always with the Questions? S90-V90

posted by  dewfpo on  Thu Sep 1 12:47 CST 2005
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last visit: Thu Oct 23 18:34 CST 2014
[RELATED]

Hi Poolman,

The purpose of the canister is for fugitive vapor emissions. Rather than being released into the atmosphere they are stored in the carbon canister. (The granulated carbon in the canister temporarily stores the HydroCarbons), to be burned in the engine at the best possible time.

When the engine is under load (low vacuum but high flow), the engine is able to handle the stored up gasoline 'fumes' and the valve is opened (under the correct conditions by the ECM).

The 'fumes' enter the system post MAF so the ECM somehow compensates for the extra A/F, unless it is really a very small amount (dimimus) and not really an issue.

If the ECM does not have to compensate for this (because of the small volume), then plugging the line probably won't hurt. I don't know what would be gained either.

DEWFPO
--
1998 S90 071,245 and 1995 964 154,100






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