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Troubleshooting electrical/ battery issues

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  • 14-05-2008 9:50am
    #1
    workaccount
    Closed Accounts Posts: 2,460 ✭✭✭


    Ok, I went home last wkend after leaving my second car parked up for over a week and the battery was flat.

    When I opened the driver door the buzzer went off like as if I had left my lights on but they were off. :confused:
    All the electrics were off.

    I jump started the car (Saturday) and everything was fine but Dad tried to go start it this morning (first time since Saturday) and it's dead again. It looks like a fairly new battery....only bought the car recently in the private market so no warranty. I'm sure it's something simple going on though.

    Once the car jump started I did not experience the buzzer going off again with th door open. Funnily enough though the buzzer did not go off everytime I opened the door when the battery was flat.

    How can I find out if something is draining it? Would the best way be to test for current in the fusebox or what to try and trace it back?

    Cheers.


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    #2
    Seth Brundle
    Moderators, Politics Moderators Posts: 39,763 Mod ✭✭✭✭Seth Brundle


    You will need a multimeter (from Maplins or wherever).
    IIRC when switched off the battery should be giving 12.8 to 13.2 volts (about 14 when on).
    Take out fuse # 1 and see if the voltage drops - if not then replace it and take out #2...
    Once you knwo what fuse covers the item then look up what that fuse is for and track the fault from there.


  • Options
    #3
    workaccount
    Closed Accounts Posts: 2,460 ✭✭✭workaccount


    kbannon wrote: »
    You will need a multimeter (from Maplins or wherever).
    IIRC when switched off the battery should be giving 12.8 to 13.2 volts (about 14 when on).
    Take out fuse # 1 and see if the voltage drops - if not then replace it and take out #2...
    Once you knwo what fuse covers the item then look up what that fuse is for and track the fault from there.

    Perfect thanks. Now's a good reason to go out and buy that fluke I've been thinking of getting for the last few months.


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