Electrical meltdown/charging issues
b.benz at charter.net
Fri Sep 28 07:24:01 PDT 2007
On Sep 28, 2007, at 6:12 AM, Feelstranger wrote:
> Folks, I hope someone has some ideas for me.
> Shortly after the electrical smoke event my SO experienced, which
> never recurred, nor could I find any evidence of at all (besides
> the smell)....
> This happened -
> Charging system failure.
> It is intermittent - start the car once and all is well, drive out
> driveway, and lights come on. Other times lights are on at startup.
> Alt has new brush pack.
> Alt output was measured at 11.+ volts - not just a dash light/volt
> gauge issue.
Check the regulator for a good ground to the alternator frame, and
the alternator to engine ground.
> Performed tests listed in Bentley - Current to exciter circuit
> (blue wire to Alt) is apparently not in spec.
> Bentley simply says "replace printed circuit board"
> referring to the instrument panel board.
The blue wire from the alternator is not an exciter circuit. It only
supplies a ground path and a charge bucking voltage to light and
extinguish the no charge idiot lite.
> I inspected the board(s) and everything looks great. No signs that
> anything here melted down either - no obvious bad solder
> connections (except the classic speedo connection)
> I even installed another board I had that appeared identical, to no
> Has anyone dealt with an issue like this?
> Can anyone elaborate on the exciter circuit once it enters the board?
> I'm in the middle of moving out of my house of 8 years this weekend
> and don't have time to tinker! Think I'm going to have to tow it
> to the new place, instead of using it to tow the trailer!
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