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Replaced Alternator and Batteries. Battery light on.
Just the other day my wife called and said there was white smoke coming from under the hood of the truck and she could smell something burning. I got the truck home and tried to start it and the batteries were dead. The smoke was coming from the passenger side which is were the alternator is. So I bought a 200 amp reman alternator from Advanced Auto (Carquest) and installed it. I could see that the original alternator was definitely burnt. I had put both batteries on charge before I started the replacement. Put them back in and tried to start the truck but they were still dead. Took them to Auto Zone and they both tested bad. I purchased two new batteries and the truck starts fine and no smoke or burning smell. But now the battery light is illuminated. With the engine off I tested both batteries with my multimeter and both are over 12V. Started the truck and the voltage goes to 13.5V. Revved engine to 2500RPM voltage holds at 13.5V. Turned everything on to put a load on it (lights, wipers, hazards, seat heaters, ac, etc) and voltage goes to 14.4V. So it appears that the alternator is doing its job. I've read on some other forum that not all alternators are recognizable by the computer? Anyone know if this is true? What else should I look for? Thanks guys.
2008 F250 119k miles
Last edited by j0ker; 07-21-2016 at 03:54 AM.