Re: charcoal canister, removal.... - Saab 900 Bulletin Board - Saabnet.com
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Re: charcoal canister, removal....
Posted by Jim Blake [Email] (more from Jim Blake) on Thu, 18 Apr 2002 09:06:02
In Reply to: charcoal canister, removal...., kooch, Thu, 18 Apr 2002 03:15:45
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Here's how its supposed to work...
When the engine's not running, the gas tank vents through the charcoal can. The charcoal traps the gasoline vapors so they don't go into the air. If you remove it, don't plug the vent line & cause excessive pressure in your gas tank.
When the engine's running, it sucks a small amount of air in through the charcoal, which evaporates the gasoline "stored" in there. The amount of air & fuel is pretty small, so the LH compensates because it's measuring excess air anyway (O2 sensor). The valve on top of the canister opens a few times every second(??) when idling, you can hear it tapping. You'd have to figure out a way to make that happen with the new ECU. Controling the ELCD is probably not very profound, because the O2 sensor provides feedback for A/F ratio. If your new ECU uses the O2 sensor, you might not even have to worry about A/F ratio.
Does this answer what you're asking??
posted by 131.184.14...
Posts in this Thread:
- charcoal canister, removal...., kooch, Thu, 18 Apr 2002 03:15:45
- Re: charcoal canister, removal...., patprice, Thu, 18 Apr 2002 15:23:43
- Buy a vac actuated canister if you want to be ethical, Bill U, Thu, 18 Apr 2002 13:30:00
- Re: charcoal canister, removal...., Todd 83-900T, Thu, 18 Apr 2002 09:33:01
- Re: charcoal canister, removal...., LarsW, Thu, 18 Apr 2002 09:11:25
- Re: charcoal canister, removal...., Jim Blake, Thu, 18 Apr 2002 09:06:02 <-- Viewing This Message
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