I have a charging problem with an '89 e30 ix.... battery light stays
off, voltage while the car is running is a bit less than battery
Here's what I've done so far:
Replaced regulator (actually 2 of them)..
bench tested alternator (load & no load)...the guy was an auto electric
guy.. rebuilds alternators.
checked all fuses.. were fine
checked voltage with the car off at the alternator on main + lead and
alternator body.. was close to battery voltage
at that point I thought maybe the alternator wasn't getting voltage on
the blue wire to establish field...so I took the inst. cluster off
tested resistance between blue wire and cluster pin (forgot which
one... came from an apparently misprinted bentley book that has the
rows for the pin numbering wrong)...
tested voltage on various inst. cluster pins according to bentley, all
made sure the leads on the ignition switch were good
then thought maybe the inst. cluster wasn't doing whatever it needs to
do to power that blue wire to the alternator, so I replaced it (the
cluster) -- (it was acting flaky anyway... fuel guage was
that didn't help.. (fuel guage looks better though!)
So I'm starting to feel some defeat... does anyone have any other
ideas? Are there any relays that might be broken? Any help would be
appreciated... I'm considering calling Duracell to see if they cell
high capacity, disposable, 12v batterys! :)
Thanks in advance for any help!