charging problem with 93 dodge spirit - voltage regulator?

He already replaced the alternator. Are you saying the replacement is

I replaced the alternator, ran a 20 miles test drive, and my wife drove
the car the next day running errands. After approximately 10
start/stops, the voltage meter on the dash dropped from 14 V to about
11 V.

It is a reman alternator

Meter was in the correct mode - I measured a couple times, in several
different resistance ranges.

-F

 

Do you find this impossible?
Actually, it happens quite frequently.

If he's actually measuring the open circuit [battery] voltage, it
means his battery is dead.

A fully charged 12 volt automotive battery should measure 12.66
volts.

Well, his first post mentioned that he had no idea what he was
doing. He has no wiring diagram. He has vague understanding of
how the system works. He has vague understanding of the external
voltage regulator modification that he's attempting to perform.

I think he's set a new record for how long it should take to
perform a 45 minute job.

 

Hopefully that's a typo, and you meant voltage ranges?

 

Read a little closer. I've referred to the wiring diagrams several
times

True, but a much better idea now

Seven lines into my first post, I mentioned as soon as the voltage
dropped again I pulled the remanufactured unit out and had it tested.
It passed, which has led us to where we are right now. Total labor
until this point: about 3 hours, including 2 alternator ins & outs and
a thermostat replacement. Hardly a record.

Besides, out of pocket cost so far: $160. I wonder what it would have
been if I hadn't bothered to get my hands dirty...

-F

 

I meant resistance ranges. He was trying to measure the resistance across
the two field studs.

 

update: another alternator replacment resolved the problems. 500 miles
and 2 weeks later, still running well.
Thanks for all your help,
-F