2004 Mercury Sable charging system light coming on

2004 MERCURY SABLE
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MUDDPUPPY4390
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Electrical problem
2004 Mercury Sable 6 cyl Two Wheel Drive Automatic

the charging system light keeps coming on. we have taken it to the auto parts store and had a diagnostic ran two times and it shows nothing. we have recently put on a remanufactured alternator and it was fine for a couple of months then the charging light started coming occasinaly. now it is staying on. we replaced the battery yesterday with no change.any ideas?
Dec 20, 2008 at 3:11 PM
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LEGITIMATE007
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check wires and connections for corrosion,including to the starter, also the alternator, may have gone bad in that short period,(voltage regulator)
Dec 20, 2008 at 3:37 PM
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LEGITIMATE007
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http://www.2carpros.com/how_to/how_to_test_alternator.htm


check out this link.
Dec 20, 2008 at 3:42 PM
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RASMATAZ
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207 this one here disappeared on me-you took it before I could answer it Could also be the computer controlled of the alternator field generation See your Charging system EWD below


https://www.2carpros.com/forum/automotive_pictures/12900_alty_40.jpg

Dec 20, 2008 at 3:48 PM