If the ranger is the same as the aerostar (in most respects it is) the
regulator is in the alternator, not in the PCM.
However, I have had some experience with the Aerostar where new
brushes and new regulator still netted an intermittent charge - so I
had to replace the entire alternator.
On Mon, 28 Jul 2008 14:15:57 -0500, "Ray Fehrenbacher"
First, turn off the MIME - Usenet News is a plain-text medium.
The first thing you check on an alternator that is starting to go
intermittent is worn slip-ring brushes. If you can't get the field
current to the rotor, you won't get any output power.
If you are handy, you can replace them yourself. A set of brushes
will cost you under $10 at any good parts counter, a bit more if you
get the whole holder with the brushes pre-assembled.
Or spend about $75 and take the unit in to a good local auto
electric rebuilding shop. They will change the brushes on your old
alternator, clean it out, lube or change the bearings as needed, and
check for other problems like bad diodes or windings.
--<< Bruce >>--
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