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Hello my name is Christina I have a 2005 Ford Explorer and my check charging system light keeps on coming up. I changed the alternator 2 to 3 times already I have had the car for about one year and half. The last time I changed my alternator was about 5 months ago so I don't know what can be wrong with the car now. Please help. Thank you

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Hopefully you can take the car back and have it repaied under warrenty.
Things that are a part of getting a charge in the battery are as listed below.
Alternator ( it makes the voltage to run car and charge the battery)
Regulator (sometimes it's internal to the regulator, sometimes its a seperate module)\
(it controls the prober voltage to run the motor and accessories, while keping the battery voltage up to full charge)
Alternator belt( turns the pulley on the alternator to make the alternator produce voltage)
Belt tensioner( a spring force if the tensioner keeps the belt pulled tight. so it does not slip when the pulley spins)
Battery connections and cables(the battery need good connections and must be in good condition to properly handle the charge voltage from the alternator)
Battery.( the battery could be bad from over voltage charging or just age )
Super Hot weather is as hard on a battery as cold weather.

Good luck

any,or a any combinations of these items could cause your problem.

Posted on Oct 05, 2010

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It seems like there is most likely a bad connection between your alternator and your battery I would look into replacing those wires. That is far more likely than that many bad alternators.

Posted on Oct 05, 2010

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