Question about Mercury Cougar

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2000 mercury cougar v6 engine, automatic transmission. I noticed a few days ago that at night with lights on , lights started to go on and off a little bit, not all the time, and battery light came on, but then the car was normal ,battery light off, till last night that while driving on the freeway at night lights started to dim , and the battery light came on , I drove till the car stopped, when the battery was drained, somebody brought me another battery and thats how i made it home,, I think is the alternator because the car is not charging the battery, with a charged battery car runns till battery goes down, now , my question is: is there any other thing that may cause this problem ? or is it a bad alternator ?, just want an advise before removing the alternator from the vehicle(wich is very hard to get to it) THANKS.

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  • dklmn66 Nov 06, 2010

    so, if I check the wire and looks fine , the problem must be the alternator, is that correct? there is no voltage regulator or something else like on older vehicles?
    Thank you.

  • dklmn66 Nov 06, 2010

    thanks.

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Hi, from the detailed explanation you have gave concerning your car till the time the battery light came on, it seems obvious that the battery is not charging as you have rightly suggested. It's either you have a corroded wire which is not allowing current flow between the alternator and battery or a bad alternator as you think.....

Posted on Nov 06, 2010

  • Tunde Autos
    Tunde Autos Nov 06, 2010

    Am not really sure your car has a voltage regulator. Once the wires are good, then it is the alternator....

  • Tunde Autos
    Tunde Autos Nov 06, 2010

    You can now accept and rate the solution...

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