Bad Alt, now new alt and Batt light? - Ranger-Forums - The Ultimate Ford Ranger Resource

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Old 09-11-2008
Thread Starter
Join Date: May 2007
Location: Northern Il
Posts: 60
Bad Alt, now new alt and Batt light?

Kinda weird problem here, looking for a little guidance on where to start. The alternator went bad in my 98, symptoms were: at times the gauge would go to half of where it was normally and lights etc would dim, it would stay this way for a while and then go back to normal. Had to drive it one day like this just to get to work and back. Next day, new alternator gets put on. Volt gauge is rock steady, has not moved at all. Drove it around town all day the first day, everything is fine. Now I have driven it to work two days(~ an hour each way) and the Batt light is going on and off.

Now what can cause the Batt light to seemingly randomly go on and off yet the volt gauge stay steady? And I know the gauge was responding with the old alt, it would show when it was not charging full perfectly. Now it acts like it is charging fine, but the batt light goes on and off
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Old 09-12-2008
Blhde's Avatar
Join Date: Oct 2005
Location: Northern IL
Posts: 2,804
Check the little wire that plugs into the back of the alt. Its all alone on its own plug.
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Old 09-12-2008
quicksilver2001's Avatar
Join Date: Dec 2004
Location: Opelousas, Louisiana
Posts: 704
what brand alternator? at work, parts has done given me the wrong alternator (fits perfect, everything plugs up) but for different application, and it does this. or possible faulty alt. hope this helps
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Old 09-12-2008
wvcat's Avatar
iTrader: (4)
Join Date: May 2007
Location: New Cumberland
Posts: 2,044
I had a battery light driving me crazy and it ended up being the harness plug where the engine plugs in. A pin was bent over.
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