Thread: Evap not venting p0446

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  1. #1 Evap not venting p0446 
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    Okay so im at my witts end with this problem. Got a 2005 grand prix gtp. Code p0446. I have replaced the purge solenoid, vent valve, filler neck, fuel pump, and vapor canister. I just took it to get a leak test done, leak found and sealed. STILL NO VENTING. We bypassed the vent valve, still no venting. I dont know where to look next.
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  2. #2 Re: Evap not venting p0446 
    Killa Bee Scottydoggs's Avatar
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    the charcoal canister might be messed up. the pellets come out and clog the vent lines.

    if your having issues filling the tank, like it pumps for a bit then turns off the pump. 99% of the time its that canister.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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