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Anyone any good at auto electrics?

  • 16-08-2007 11:32am
    #1
    Jumpy
    Registered Users, Registered Users 2 Posts: 7,606 ✭✭✭


    Right heres the story so far.

    Car battery not charging.
    Had the battery tested - ok
    Started the car and removed the (-) cable from the battery, car still runs, so its not the alternator.

    Any idea what could be wrong?


Comments

  • #2
    nialler
    Registered Users, Registered Users 2 Posts: 896 ✭✭✭nialler


    If you're in Dublin there's an auto electrics place in Ringsend by Fisherman's Wharf (close to the east link bridge) could be worth a look.


  • #3
    DublinDilbert
    Registered Users, Registered Users 2 Posts: 5,401 ✭✭✭DublinDilbert


    Jumpy wrote:
    Right heres the story so far.

    Car battery not charging.
    Had the battery tested - ok
    Started the car and removed the (-) cable from the battery, car still runs, so its not the alternator.

    Any idea what could be wrong?

    When you removed the (-) cable from the battery did you measure the voltage being supplied from the alternator to the 12V bus in the car?? it could be that the alternator is only supplying 11V or something like this... did you try turn on any electrical loads, eg head lights or rear window heater??


    The best way to check the system out is get a DC Clamp ammeter (put it onto the +12V high current cable going to the battery) and measure the starting current coming from the battery and then the charging current going into the battery after the engine starts, also monitor the voltage of the battery...


  • #4
    Jumpy
    Registered Users, Registered Users 2 Posts: 7,606 ✭✭✭Jumpy


    Had an auto electrician looking at it, its charging fine. I dont know what went wrong. Apparently everything is perfect again.
    My car does funny things after the battery goes flat. This is another funny.


  • #5
    Seth Brundle
    Moderators, Politics Moderators Posts: 41,226 Mod ✭✭✭✭Seth Brundle


    Jumpy wrote:
    My car does funny things after the battery goes flat.
    Thats weird alright! My car doesn't do much after the battery goes flat!


  • #6
    Jumpy
    Registered Users, Registered Users 2 Posts: 7,606 ✭✭✭Jumpy


    kbannon wrote:
    Thats weird alright! My car doesn't do much after the battery goes flat!

    -and jumpstarted smarty pants :D


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  • #7
    Darragh29
    Closed Accounts Posts: 7,097 ✭✭✭Darragh29


    What voltage are you getting across the battery +ve and -ve terminals when the engine is running??? Use an amp clamp on the battery positive lead to see if there is any current being drawn when the ignition is off...


  • #8
    Darragh29
    Closed Accounts Posts: 7,097 ✭✭✭Darragh29


    Is it an Almera or Primera by any chance??? If so, PM me as I might have a solution based on a recently problem that sounded similar to yours...


  • #9
    Jumpy
    Registered Users, Registered Users 2 Posts: 7,606 ✭✭✭Jumpy


    Nope, an FTO. It was 14v on the meter that the Auto-electrician was using.


  • #10
    DrChoda
    Closed Accounts Posts: 75 ✭✭DrChoda


    My first guess would have been battery.
    How are the battery cables? Sometimes that can be an overlooked issue.
    Glad to hear its running fine now. If it happens again, sounds like a bad battery.


  • #11
    colm_mcm
    Registered Users, Registered Users 2 Posts: 73,520 ✭✭✭✭colm_mcm


    Jumpy wrote:
    Nope, an FTO. It was 14v on the meter that the Auto-electrician was using.

    Knew that problem sounded familiar alright! Even the guys on the FTO forum couldn't help, at least there was a happy ending!


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