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Thread: Best Way to Test Alternator?

  
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    Sam666's Avatar
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    Best Way to Test Alternator?

    Had a shit day with the car not starting instantly after I turn off and taking about 25mins to jump the battery with a seat Ibiza 1.4

    I just went to Vauxhall and bought a battery, before I put in, how can I test it's the Alternator etc? I have a volt metre and battery charger etc.

    Pref not worsening the frost bite on my hands.

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    im affraid the way i know may cause frost bite on your hands.

    start the engine and while engine is running, get your multi metre and turn it to 12v setting ( not fused if your voltmeter comes with the option )

    then attach postive probe to the positive battery terminal and negative to negative terminal. the reading should read between 13 - 14v. if its below 12v or just over then its not charging properly and this is the cause to the flat batterys, may be a case of a loose connection somewhere or tht the alternator is on the way out in which case it needs changing ASAP.

    HTH

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    Quote Originally Posted by srisport View Post
    im affraid the way i know may cause frost bite on your hands.

    start the engine and while engine is running, get your multi metre and turn it to 12v setting ( not fused if your voltmeter comes with the option )

    then attach postive probe to the positive battery terminal and negative to negative terminal. the reading should read between 13 - 14v. if its below 12v or just over then its not charging properly and this is the cause to the flat batterys, may be a case of a loose connection somewhere or tht the alternator is on the way out in which case it needs changing ASAP.

    HTH
    Nope because, on my radar detector it tells me battery voltage, didn't think of this.

    Thanks bud.

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    Or take the charge straight from the back of the altenator

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    or, if you can take your car to Halfords they offer a free Alternator and battery check.
    Probably the ONLY Astra Mk3 sitting on Corsa D SXI rims!
    And Now a Diesel on Discs all round!

    http://www.astraownersclub.com/vb/sh...d.php?t=162503

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