Question about Chrysler PT Cruiser

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Can not get battery light to go off on 2002 pt cruiser. Have replaced the alternator, 4 to be exact and charged a two month old battery. Battery light keeps popping on.

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My name is Ron,I will try and help you.Was this battery on the vehicle when the original alternator was on the vehicle?If so It is possible that the alternator was the begining of all the problems.The alternator produces ac voltage,12 volts ac,like house current.This is called alternating current,back and forth as you may.Before the ac voltage can leave the alternator,it is converted into dc voltage(directional current).This dc current only moves in one direction,thats why there is a positive and a negative.Diodes cause the ac voltage to only go in one direction( dc volts) there for creating dc volts,12 volts.These diodes are made to allow current to pass threw them only one way,current can not go backwards threw these diodes,unless they burnout,then they will allow voltage to leak out ,going backwards,creating ac voltage,therfore charging your battery up and having a battery with some ac voltage,or a lot of ac voltage.If this has happenned any motors ,such as starter motors will not turn to start a vehicle,cause they do not know witch way to turn.The battery will not be salvagable.Get the battery checked ,and ask them to check it for ac voltage,They might think your crazy but it happens,more than you think,a lot of mechanics dont know this,so you may have to ask more than 3 or 4,before you get a mechanic to understand .this is just a suggestion to try.Ac voltage will cause the battery light to light up.also check battery connections at battery and alternator for looseness and black corrosion,battery terminals most likely will have this.The large post on the alternator is the out put wire to the battery,Add another battery wire or small cable to the back of the alternator to the battery and see if this does the trick.May be this will fix ya,,,,,for more help

Posted on Jul 21, 2009

  • Diana Sep 23, 2013

    where do i hook the wire to on the alternator


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