Re: Factor Alternator ONLY??
Tom Adkins wrote:
> Backyard Mechanic wrote:
> > "Stickarella" <email@example.com> wrote:
> >>I have been having electrical problems with my 2001 Ford Focus for
> >>about 3 months. Replaced battery, alternator (twice) and computer.
> >>Lights still flicker, car still idles at like 3 different speeds, etc.
> >>Now they tell me that the car can ONLY work with a Ford factory
> >>alternator. Has anyone else heard of this??
> > From an engineer's point of view... that's far-fetched. NOTHING is
> > simpler than an integrated alternator.
> > The associated wiring, however, with possible bad engine and harness
> > grounds, connection faults etc. makes it difficult to resolve that type
> > of problem... but that is where they should look.
> This is something I've never heard before, but I can see it happening. In about 2000
> Ford started tieing the alternator field into the PCM to more accurately control the
> charging system output. I'm sure that system has become more integrated since then
> making the alternator much more specific to the vehicle. Once cores become more
> available in the Aftermarket stream, they should become more available in places
> beside the dealer.
> I remember when GM changed the design of their alternators in the early 90s(SI
> series?). They were said to be non-rebuildable and too expensive to produce for the
> aftermarket, or something along those lines. The first remans available were trouble
> prone and expensive. After a few years they were readily available.
If you're using one of the chain auto parts store rebuilt alternators,
reliability is a crapshoot, and you'll waste a lot of time finding one that
works well for any length of time. If Ford's using a Misubishi-made alternator
as OEM, those seemingly can't be rebuilt reliably, and you'd be better off just
getting a new (not rebuilt) alternator from Ford or some aftermarket company
like Pa Performance or WaI.