92 se Charcoal Canister Question - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 04-20-2004, 07:34 PM   #1
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Default 92 se Charcoal Canister Question

What all the does the Canister connect to? mine connects to two things the throttlebody and to my fuel tank thats on my purge valve. then theres a connecter that says air that isnt connected to anything just has a cap kinda thing on it.
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Old 04-20-2004, 09:54 PM   #2
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Under your hood you should have a schematic of the emissions system and vacuum lines. It should (if I am not mistaken) show you there.
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Old 04-21-2004, 12:27 AM   #3
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Its warn down pretty bad hangs half off. I was wondering if any other 92 owners would know? on the canister the valve on the side with cap says air, the fuel tank line is connected to the right spot, the purge valve is connected to the throttlebody so i dont know what it would be purgeing
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Old 04-21-2004, 01:16 AM   #4
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It purges to the tank when certain PCM conditions are met.
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Old 04-21-2004, 06:05 PM   #5
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The purge valve opens (vent valve closed) to apply slight vacum in fuel tank. The fuel tank vapors are pulled from fuel tank through the evap canister into the intake. This routine is run by the PCM to basically check the integrity of the Evap System. Normally the purge valve is shut, the vent valve is open.
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Old 04-22-2004, 11:05 AM   #6
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In response to your original question, it sounds like your connections are correct - front connection to the tank and middle connection to the throttle body.

The 'cap' on the rear 'AIR' port isn't really a cap, it'* more like a partial cover (it'* not air tight).

This is the way it'* connected on my '92 and '93 (both are supercharged).
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Old 04-22-2004, 11:52 AM   #7
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thanks i was getting confused there for awhile. do you have to buy a whole new canister, or can you buy just the purge valve?it looks lik my canister doesnt come apart.
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