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Intermittent buzzing sound when turned off

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    #1

    Intermittent buzzing sound when turned off

    One of my CBs has a soft intermittent buzzing sound coming from the rear of the vehicle when the car is turned off and I believe this is not normal because my other CB does not do this. (Though I still love it, it has its own problems…) I only hear it when the car is off and searches I have found only show odd sounds during operation. I think it’s a fuel pump problem but I’m not sure due to lack of fuel tank experience. The car’s operation itself doesn’t seem hindered and I would like to avoid that along with higher repair costs if possible.
    Tags: None
    #2
    Mine does it too. It is coming from the gas cap. The tank is venting. Next time you here that noise, open the gas cap slowly and see if it purges. The noise should be gone.

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      #3
      Mine has done that for years now. I open the gas cap sometimes, sometimes not. I thought my fuel pump would go out soon after I heard it but I guess its fine.
      ......father in law has it back again. Time to shine

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        #4
        weird..you kind of um want that pressure to stay, especially while driving... should probably acquire a new cap because its not doing its job.

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          #5
          Thanks, I'm so glad I don't have to open that messy job of a fuel pump replacement.

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