2003 Ford 350 Van 5.4l

The Battery and Alternator test good. The last time driving the vehicle, the
ABS and Battery lights in the dash came on and the battery completely went
dead. Before this time, the two lights would come on and off intermittently
while driving and also loose power a little bit. This seems to happen after
driving awhile. Any ideas, we are thinking it could be the alternator.

Keith

"MYsubaru1986 via CarKB.com" wrote in :

With a voltmeter, what is the voltage across the battery with the car
not running? What is the voltage when the car is running?

VanguardLH wrote:

Hmmm,
Intermittent short somewhere around ABS sensor wires?

On Mon, 12 May 2008 00:37:05 GMT, Tony Hwang wrote:

clare at snyder dot ontario dot canada wrote:

MYsubaru1986 via CarKB.com wrote:

My money would be on the alternator. First choice would be
intermittent/heat problem with the electronics inside. Less likely,
glazed/slipping belt (when was it last checked/replaced?) or trouble
with the 'exciter' circuit I suppose.

Carl

"MYsubaru1986 via CarKB.com" wrote:

Hi,

Original battery?

If so, you're around five years on it. That's not bad for OEM. And for
whatever reasons I don't quite understand, I've had batteries go bad in
what a buddy laughingly calls "digital failure mode." Car fires right up
as always, no indication of trouble, then the next time the key's
turned, NOTHING. Might be worth thinking of a replacement battery
regardless? Bad batteries are hard on alternators, too...

Also check for loose/corroded connections at the battery, grounds and
other connections you can tighten/clean...

Rick

On Mon, 12 May 2008 03:24:55 -0400, Rick Courtright wrote
(in article <4827F0C7.9E7D7032@iname.com>):

My wife's 1999 Forester, bought new in the fall of 1998, still has its
original battery. This is despite the fact that she has only 45,000 miles on
the car

John Varela wrote: