check charging system and battery light on and offf

Asked by Sep 21, 2016 at 05:52 PM about the 2004 Ford Taurus SE

Question type: Maintenance & Repair

2004 taurus se NEW battery and alternator why does battery light go off and
on as well as check chargng system GREAT pickup lights work windows work  
but sluggish

3 Answers

90,935

This vehicle has a computer controlled charging system, so even though the alternator and battery check good there still maybe a problem with the computer turning on the alternator. Did you have the system live data scanned?

no my boyfriend is very good when it comes to cars forgive me for my ignorance but are you referring to go t advance and have them plug into the computer had a friend do that came back charging system is fine

90,935

No, a live data scan will show the Tech everything the computer is seeing and it's response to those readings so if there is anything out of specs by just a little it will show, even though it might not even turn on the check engine light.

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