Alternator OEM FORD or Denso

Did they put in an OEM ford alternator? Fords switched to their “smart charging” system and its a little more complicated than your average alternator diagnosis.

The Taurus alternator and 2 speed e-fan come to mind as the two most common parts that people pickup from junkyards and slap them on to their cars.

For my personal vehicles, I replace alternators at 100K with Remy or Denso new alternators and have never had an issue and I save a lot of money by waiting a couple of days.

Nippondenso (Denso) is what I would choose, I believe this is the OEM manufacturer.

I would get Denso

Had the same issue with a reman denso alternator that went in a Honda, it was the cheap diode/rectifier pack that was fitted that was causing the bat light to stay on.

Had the same issue with my -07 Volvo v50 (it has a ford engine). Swapped the alternator and the problem was gone.

you can go on rockauto.com and should be able to purchase an OEM Denso Alternator.

If you are going to get a new or remanufactured alternator spend the $$$ for a DENSO one.

I had one during college... For a V6 it wasn't particularly quick and handled a lot bigger than it was. In three years it ate five alternators and the intake runner control box was notorious for failing (killing what little power it had).