I say skip the reman ECU question and splice in an old style external
voltage regulator. I did it on my 89, and I'll do it again on my 94
ECU when it starts giving me problems. I can't remember the procedure
off hand, but if you search the archives, you'll find my post as well
as whoever I learned it from. It's pretty simple.
The only things I've ever fried by overcharging (as a result of VR
malfunction) were the battery and alternator. Fried battery makes
sense... Fried alt becomes a question similar to that of the chicken
and the egg.
Don in CT
89/94 Dak Vert 318 NV3500 4x4
74 Dart Sport 340
On 6/19/08, Terrible Tom <silvereightynine@aol.com> wrote:
>
> Jon N. Benignus wrote:
> >
> > Hello again, gang.
> > haven't been on the list for a couple years and resubbed last week.
> > Been lurking until today...boy, someone either needs a cuppa or has had a
> cuppa
> > too many...
> > Anyhoo, my dilemma:
> > 92 V6 AT, 150k miles, no mods. hadn't been driven for a bit, I had just
> replaced
> > the exhaust from the Y-pipe back. Took it in for inspection, then to
> license
> > office. On the way the voltmeter read 17v. When leaving the office it
> wouldn't
> > start until I matted the pedal.
> > ran fine, still overcharging.
> > Had to drive it to work the next day (Both the Spirit and Guzzi were
> down).
> > ran fine, still overcharging, confirmwed by DMM, 17v at idle.
> > Got home, shut it off and then no start. Checked for spark from coil,
> none.
> > Checked inside distributor, and it had lots of oil in it. Okay, need to
> change
> > dizzy. I bought one a few years ago from a fellow on the list, so
> temporarily
> > used the pickup from it and change cap and rotor (good one from NAPA).
> Still no
> > spark.
> > Now, since the voltage regulator is in the ECU I bought a used one. Still
> > nothing.
> > Checked for voltage at pin 9 on the ECU, I have 12v. Continuity at all
> ground
> > points. Recent battery, and clean terminals.
> > I repaired the harness splice last year and checked it. Still good.
> >
> > I think I may have purchased a bum ECU. That's the risk with buying from
> salvage
> > yards.
> >
> > Suggestions, comments, and snide remarks (today is a good day for them
> LOL)
> > appreciated.
> > Jon
> > STL MO
> > 92 V6 AT RC LB
> >
> >
> >
>
> Hi Jon! Well the first thing that came to my head when you said
> overcharging - and at 17 volts YIPE! - was a bad PCM, as that regulates the
> voltage. What worrys me now is that other componants could have been
> crispied by the higher voltage... Check engine light on?
>
> I would also have your battery load tested to make sure it didnt get cooked
> from the overcharge condition. As for the PCM, hard for me to sit back and
> say "go buy a reman unit and try it", because I can't say for sure that will
> fix it.
>
>
> --
> ------------------------------------------------------------
> TerribleTom! New and improved for 2008! Twice As TERRIBLE!
> Twice as INSANE! Now with Kung Foo Grip! *batteries not included*
> ------------------------------------------------------------
> The Mopar Enthusiasts Crunch Team http://tinyurl.com/32g3qj
> ------------------------------------------------------------
>
>
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