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Weird Buzzing from charcoal canister HELP

11K views 7 replies 3 participants last post by  qsd-dan  
#1 ·
I have an 86 Runner 4x4 and the charcoal canister makes a weird buzzing noise, even if power is off, and battery is disconnected. What is that all about? Is it bad, how can I fix it? Please let me know.