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Bad Alternator? (2003 Honda Civic LX)

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    Topic
  • #460523
    college mancollege man
    Moderator

      My suggestion is have the battery load tested at an auto part store._x000D_
      see what there test shows.

    Viewing 15 replies - 16 through 30 (of 50 total)
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    • #460539
      twiggytwiggy
      Participant

        You mentioned measuring alt voltage with full load and hi rpm and said the gauge was jumping around. Are you talking about the gauge of your meter or in your dashboard. If the voltage of your meter is jumping around it would indicate a high ac component t

        #460540
        spelunkerdspelunkerd
        Participant

          twiggy02919 makes a really good point. The battery stabilizes the circuit, and other exterior components like the AC compressor make assessment of the alternator in isolation more difficult. When I get confused like that, I try to simplify the testing, wh

          #460541
          Matt BrandsemaMatt Brandsema
          Participant

            I will check the wiring on the positive side tomorrow.

            #460542
            FaderFader
            Participant

              Ok so wire diagrams.._x000D_
              Check out this place. It was on another post here on the form somewhere.http://www.powerlibrary.net_x000D_
              Login Code: pl249412345678 Next page look for:_x000D_
              ————-

              #460543
              EricTheCarGuy 1EricTheCarGuy
              Keymaster

                How about checking the belt tension?

                #460544
                Matt BrandsemaMatt Brandsema
                Participant

                  [quote]Quoted From EricTheCarGuy:_x000D_
                  _x000D_
                  How about checking the belt tension?

                  #460545
                  dreamer2355dreamer2355
                  Participant

                    I dont think the diodes are going to be the issue unless you are also suffering from a battery drain.

                    #460546
                    FaderFader
                    Participant

                      Thats what I was saying

                      #460548
                      spelunkerdspelunkerd
                      Participant

                        [quote]Quoted From EricTheCarGuy:_x000D_
                        _x000D_
                        How about checking the belt tension?

                        #460549
                        dreamer2355dreamer2355
                        Participant

                          Spelunkerd -_x000D_
                          _x000D_
                          This link shows a decent understanding on how the alternator/battery light works -_x000D_
                          _x000D_
                          http://www.alternatorparts.com/understa … htm_x000D_
                          _x000D_
                          Hope this helps.

                          #460550
                          spelunkerdspelunkerd
                          Participant

                            Dreamer, what an OUTSTANDING article. THANK YOU._x000D_
                            _x000D_

                            #460551
                            Bad_dudeBad_dude
                            Participant

                              Once you check your belt and it’s ok. then I think it’s your alternator.

                              #460547
                              rice400rice400
                              Participant

                                Check the belts for

                                #460552
                                EricTheCarGuy 1EricTheCarGuy
                                Keymaster

                                  Nice article Dreamer._x000D_
                                  _x000D_
                                  I agree, if your belt tension is OK I’d replace the alternator IF you want to get the light out, keep in mind the light has nothing to do with the actual charging of the system however you wouldn’t know if it failed for real in th

                                  #460553
                                  Matt BrandsemaMatt Brandsema
                                  Participant

                                    Well I did a voltage drop on the positive side of the circuit. (Battery + to hot wire on alternator and got 0.04 volts. So no excessive resistance.

                                  Viewing 15 replies - 16 through 30 (of 50 total)
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