Engine Alternator overcharging

[jim matus]

I am having a problem with my Leece-Neville alternator overcharging. I
had it rebuilt as preventive maint.,it woked ok for about 800-1000
miles then it started over charging 15-15.5 volts & 80-100amps. I took
it back to the rebuilder and they said the regulator was bad so they
replaced it. They told me to check the voltage to the small + post
under the regulator. I was getting about .75 of a volt less than
battery voltage as measured at the big + post. I could not find where
the volt drop was so I ran a new wire from the ignition operated
solinoid above the throttle pedal. The alternator is still
overcharging. We are supposed to leave on Friday for a 4000 mile trip
so this is a big problem. Did Bluebird use a special regulator since
they have Batt. power to the alternator all of the time? The rebuilder
may have installed the wrong regulator. Thanks Jim Matus 84FC35 Rescue
CA

[Chuck Wheeler]

Jim,



What is the voltage from the alternator frame to the + post on the
alternator?



- Chuck Wheeler -

82 FC 31 SB

Fort Worth, TX

_____

From: WanderlodgeForum@yahoogroups.com
[mailto:WanderlodgeForum@yahoogroups.com] On Behalf Of jim matus
Sent: Sunday, July 15, 2007 3:55 PM
To: WanderlodgeForum@yahoogroups.com
Subject: [WanderlodgeForum] Engine Alternator overcharging



I am having a problem with my Leece-Neville alternator overcharging. I
had it rebuilt as preventive maint.,it woked ok for about 800-1000
miles then it started over charging 15-15.5 volts & 80-100amps. I took
it back to the rebuilder and they said the regulator was bad so they
replaced it. They told me to check the voltage to the small + post
under the regulator. I was getting about .75 of a volt less than
battery voltage as measured at the big + post. I could not find where
the volt drop was so I ran a new wire from the ignition operated
solinoid above the throttle pedal. The alternator is still
overcharging. We are supposed to leave on Friday for a 4000 mile trip
so this is a big problem. Did Bluebird use a special regulator since
they have Batt. power to the alternator all of the time? The rebuilder
may have installed the wrong regulator. Thanks Jim Matus 84FC35 Rescue
CA





[Non-text portions of this message have been removed]

[David Brady]

Try jumping the alternator's sense wire to the battery positive terminal.
Your sense wire might be disconnected or degraded resulting in high
resistance.

David Brady
'02 LXi, Smokey
NC

jim matus wrote:
>
> I am having a problem with my Leece-Neville alternator overcharging. I
> had it rebuilt as preventive maint.,it woked ok for about 800-1000
> miles then it started over charging 15-15.5 volts & 80-100amps. I took
> it back to the rebuilder and they said the regulator was bad so they
> replaced it. They told me to check the voltage to the small + post
> under the regulator. I was getting about .75 of a volt less than
> battery voltage as measured at the big + post. I could not find where
> the volt drop was so I ran a new wire from the ignition operated
> solinoid above the throttle pedal. The alternator is still
> overcharging. We are supposed to leave on Friday for a 4000 mile trip
> so this is a big problem. Did Bluebird use a special regulator since
> they have Batt. power to the alternator all of the time? The rebuilder
> may have installed the wrong regulator. Thanks Jim Matus 84FC35 Rescue
> CA
>
>
> ------------------------------------------------------------------------
>
> No virus found in this incoming message.
> Checked by AVG Free Edition.
> Version: 7.5.476 / Virus Database: 269.10.6/900 - Release Date: 7/14/2007 3:36
PM
>



[Non-text portions of this message have been removed]

[jim matus]

I did that and it charged ok but after I hooked it up with the sense
wire it started overcharging and now it overcharges no matter how you
connect it so I guess the regulator blew again. Jim Matus 84FC35
Rescue CA --
- In WanderlodgeForum@yahoogroups.com, David Brady wrote:
>
> Try jumping the alternator's sense wire to the battery positive
terminal.
> Your sense wire might be disconnected or degraded resulting in high
> resistance.
>
> David Brady
> '02 LXi, Smokey
> NC
>
> jim matus wrote:
> >
> > I am having a problem with my Leece-Neville alternator
overcharging. I
> > had it rebuilt as preventive maint.,it woked ok for about 800-1000
> > miles then it started over charging 15-15.5 volts & 80-100amps. I
took
> > it back to the rebuilder and they said the regulator was bad so
they
> > replaced it. They told me to check the voltage to the small + post
> > under the regulator. I was getting about .75 of a volt less than
> > battery voltage as measured at the big + post. I could not find
where
> > the volt drop was so I ran a new wire from the ignition operated
> > solinoid above the throttle pedal. The alternator is still
> > overcharging. We are supposed to leave on Friday for a 4000 mile
trip
> > so this is a big problem. Did Bluebird use a special regulator
since
> > they have Batt. power to the alternator all of the time? The
rebuilder
> > may have installed the wrong regulator. Thanks Jim Matus 84FC35
Rescue
> > CA
> >
> >
> > ------------------------------------------------------------------
------
> >
> > No virus found in this incoming message.
> > Checked by AVG Free Edition.
> > Version: 7.5.476 / Virus Database: 269.10.6/900 - Release Date:
7/14/2007 3:36 PM
> >
>
>
>
> [Non-text portions of this message have been removed]
>

[jim matus]

Chuck: The voltage is 12.32 volts same as battery voltage. Jim Matus
84FC35 Rescue CA -
-- In WanderlodgeForum@yahoogroups.com, "Chuck Wheeler"
wrote:
>
> Jim,
>
>
>
> What is the voltage from the alternator frame to the + post on the
> alternator?
>
>
>
> - Chuck Wheeler -
>
> 82 FC 31 SB
>
> Fort Worth, TX
>
> _____
>
> From: WanderlodgeForum@yahoogroups.com
> [mailto:WanderlodgeForum@yahoogroups.com] On Behalf Of jim matus
> Sent: Sunday, July 15, 2007 3:55 PM
> To: WanderlodgeForum@yahoogroups.com
> Subject: [WanderlodgeForum] Engine Alternator overcharging
>
>
>
> I am having a problem with my Leece-Neville alternator
overcharging. I
> had it rebuilt as preventive maint.,it woked ok for about 800-1000
> miles then it started over charging 15-15.5 volts & 80-100amps. I
took
> it back to the rebuilder and they said the regulator was bad so
they
> replaced it. They told me to check the voltage to the small + post
> under the regulator. I was getting about .75 of a volt less than
> battery voltage as measured at the big + post. I could not find
where
> the volt drop was so I ran a new wire from the ignition operated
> solinoid above the throttle pedal. The alternator is still
> overcharging. We are supposed to leave on Friday for a 4000 mile
trip
> so this is a big problem. Did Bluebird use a special regulator
since
> they have Batt. power to the alternator all of the time? The
rebuilder
> may have installed the wrong regulator. Thanks Jim Matus 84FC35
Rescue
> CA
>
>
>
>
>
> [Non-text portions of this message have been removed]
>

[ac7880]

Have you checked all grounds on the coach (battery, frame, etc?)

Insecure grounds can do strange things to apparently unrelated
components.
Dan
94 BMC 37'
--- In WanderlodgeForum@yahoogroups.com, "jim matus"
wrote:
>
> I did that and it charged ok but after I hooked it up with the
sense
> wire it started overcharging and now it overcharges no matter how
you
> connect it so I guess the regulator blew again. Jim Matus 84FC35
> Rescue
CA --
> - In WanderlodgeForum@yahoogroups.com, David Brady wrote:
> >
> > Try jumping the alternator's sense wire to the battery positive
> terminal.
> > Your sense wire might be disconnected or degraded resulting in
high
> > resistance.
> >
> > David Brady
> > '02 LXi, Smokey
> > NC
> >
> > jim matus wrote:
> > >
> > > I am having a problem with my Leece-Neville alternator
> overcharging. I
> > > had it rebuilt as preventive maint.,it woked ok for about 800-
1000
> > > miles then it started over charging 15-15.5 volts & 80-100amps.
I
> took
> > > it back to the rebuilder and they said the regulator was bad so
> they
> > > replaced it. They told me to check the voltage to the small +
post
> > > under the regulator. I was getting about .75 of a volt less than
> > > battery voltage as measured at the big + post. I could not find
> where
> > > the volt drop was so I ran a new wire from the ignition operated
> > > solinoid above the throttle pedal. The alternator is still
> > > overcharging. We are supposed to leave on Friday for a 4000
mile
> trip
> > > so this is a big problem. Did Bluebird use a special regulator
> since
> > > they have Batt. power to the alternator all of the time? The
> rebuilder
> > > may have installed the wrong regulator. Thanks Jim Matus 84FC35
> Rescue
> > > CA
> > >
> > >
> > > ----------------------------------------------------------------
--
> ------
> > >
> > > No virus found in this incoming message.
> > > Checked by AVG Free Edition.
> > > Version: 7.5.476 / Virus Database: 269.10.6/900 - Release Date:
> 7/14/2007 3:36 PM
> > >
> >
> >
> >
> > [Non-text portions of this message have been removed]
> >
>

[Chuck Wheeler]

Then I confused! Where is the 15+ volts? Sounds like it's dead, not
overcharging.



- Chuck Wheeler -

82 FC 31 SB

Fort Worth, TX

_____

From: WanderlodgeForum@yahoogroups.com
[mailto:WanderlodgeForum@yahoogroups.com] On Behalf Of jim matus
Sent: Monday, July 16, 2007 12:33 AM
To: WanderlodgeForum@yahoogroups.com
Subject: [WanderlodgeForum] Re: Engine Alternator overcharging



Chuck: The voltage is 12.32 volts same as battery voltage. Jim Matus
84FC35 Rescue CA -
-- In WanderlodgeForum@
yahoogroups.com, "Chuck Wheeler"
wrote:
>
> Jim,
>
>
>
> What is the voltage from the alternator frame to the + post on the
> alternator?
>
>
>
> - Chuck Wheeler -
>
> 82 FC 31 SB
>
> Fort Worth, TX
>
> _____
>
> From: WanderlodgeForum@
yahoogroups.com
> [mailto:WanderlodgeForum@
yahoogroups.com] On Behalf Of jim matus
> Sent: Sunday, July 15, 2007 3:55 PM
> To: WanderlodgeForum@
yahoogroups.com
> Subject: [WanderlodgeForum] Engine Alternator overcharging
>
>
>
> I am having a problem with my Leece-Neville alternator
overcharging. I
> had it rebuilt as preventive maint.,it woked ok for about 800-1000
> miles then it started over charging 15-15.5 volts & 80-100amps. I
took
> it back to the rebuilder and they said the regulator was bad so
they
> replaced it. They told me to check the voltage to the small + post
> under the regulator. I was getting about .75 of a volt less than
> battery voltage as measured at the big + post. I could not find
where
> the volt drop was so I ran a new wire from the ignition operated
> solinoid above the throttle pedal. The alternator is still
> overcharging. We are supposed to leave on Friday for a 4000 mile
trip
> so this is a big problem. Did Bluebird use a special regulator
since
> they have Batt. power to the alternator all of the time? The
rebuilder
> may have installed the wrong regulator. Thanks Jim Matus 84FC35
Rescue
> CA
>
>
>
>
>
> [Non-text portions of this message have been removed]
>





[Non-text portions of this message have been removed]

[David Brady]

Sorry for this Jim, but I gotta ask, was the engine running when
you read the 12.32V?

David Brady
'02 LXi, Smokey
NC

jim matus wrote:
>
> Chuck: The voltage is 12.32 volts same as battery voltage. Jim Matus
> 84FC35 Rescue CA -
> -- In WanderlodgeForum@yahoogroups.com
> , "Chuck Wheeler"
> wrote:
> >
> > Jim,
> >
> >
> >
> > What is the voltage from the alternator frame to the + post on the
> > alternator?
> >
> >
> >
> > - Chuck Wheeler -
> >
> > 82 FC 31 SB
> >
> > Fort Worth, TX
> >
> > _____
> >
> > From: WanderlodgeForum@yahoogroups.com
>
> > [mailto:WanderlodgeForum@yahoogroups.com
> ] On Behalf Of jim matus
> > Sent: Sunday, July 15, 2007 3:55 PM
> > To: WanderlodgeForum@yahoogroups.com
>
> > Subject: [WanderlodgeForum] Engine Alternator overcharging
> >
> >
> >
> > I am having a problem with my Leece-Neville alternator
> overcharging. I
> > had it rebuilt as preventive maint.,it woked ok for about 800-1000
> > miles then it started over charging 15-15.5 volts & 80-100amps. I
> took
> > it back to the rebuilder and they said the regulator was bad so
> they
> > replaced it. They told me to check the voltage to the small + post
> > under the regulator. I was getting about .75 of a volt less than
> > battery voltage as measured at the big + post. I could not find
> where
> > the volt drop was so I ran a new wire from the ignition operated
> > solinoid above the throttle pedal. The alternator is still
> > overcharging. We are supposed to leave on Friday for a 4000 mile
> trip
> > so this is a big problem. Did Bluebird use a special regulator
> since
> > they have Batt. power to the alternator all of the time? The
> rebuilder
> > may have installed the wrong regulator. Thanks Jim Matus 84FC35
> Rescue
> > CA
> >
> >
> >
> >
> >
> > [Non-text portions of this message have been removed]
> >
>
>
> ------------------------------------------------------------------------
>
> No virus found in this incoming message.
> Checked by AVG Free Edition.
> Version: 7.5.476 / Virus Database: 269.10.6/900 - Release Date: 7/14/2007 3:36
PM
>



[Non-text portions of this message have been removed]

[jim matus]

The reading I gave you was with the engine shut off. + post to
alternator frame I thought that is what you wre asking . With the
engine running I was getting 15+ volts on the dash volt meter and the
alternator was getting very warm. Jim Matus 84FC35 Rescue CA -
-- In WanderlodgeForum@yahoogroups.com, "Chuck Wheeler"
wrote:
>
> Then I confused! Where is the 15+ volts? Sounds like it's dead,
not
> overcharging.
>
>
>
> - Chuck Wheeler -
>
> 82 FC 31 SB
>
> Fort Worth, TX
>
> _____
>
> From: WanderlodgeForum@yahoogroups.com
> [mailto:WanderlodgeForum@yahoogroups.com] On Behalf Of jim matus
> Sent: Monday, July 16, 2007 12:33 AM
> To: WanderlodgeForum@yahoogroups.com
> Subject: [WanderlodgeForum] Re: Engine Alternator overcharging
>
>
>
> Chuck: The voltage is 12.32 volts same as battery voltage. Jim
Matus
> 84FC35 Rescue CA -
> -- In WanderlodgeForum@
> yahoogroups.com, "Chuck Wheeler"
> wrote:
> >
> > Jim,
> >
> >
> >
> > What is the voltage from the alternator frame to the + post on the
> > alternator?
> >
> >
> >
> > - Chuck Wheeler -
> >
> > 82 FC 31 SB
> >
> > Fort Worth, TX
> >
> > _____
> >
> > From: WanderlodgeForum@ 40yahoogroups.com>
> yahoogroups.com
> > [mailto:WanderlodgeForum@ 40yahoogroups.com>
> yahoogroups.com] On Behalf Of jim matus
> > Sent: Sunday, July 15, 2007 3:55 PM
> > To: WanderlodgeForum@
> yahoogroups.com
> > Subject: [WanderlodgeForum] Engine Alternator overcharging
> >
> >
> >
> > I am having a problem with my Leece-Neville alternator
> overcharging. I
> > had it rebuilt as preventive maint.,it woked ok for about 800-
1000
> > miles then it started over charging 15-15.5 volts & 80-100amps. I
> took
> > it back to the rebuilder and they said the regulator was bad so
> they
> > replaced it. They told me to check the voltage to the small +
post
> > under the regulator. I was getting about .75 of a volt less than
> > battery voltage as measured at the big + post. I could not find
> where
> > the volt drop was so I ran a new wire from the ignition operated
> > solinoid above the throttle pedal. The alternator is still
> > overcharging. We are supposed to leave on Friday for a 4000 mile
> trip
> > so this is a big problem. Did Bluebird use a special regulator
> since
> > they have Batt. power to the alternator all of the time? The
> rebuilder
> > may have installed the wrong regulator. Thanks Jim Matus 84FC35
> Rescue
> > CA
> >
> >
> >
> >
> >
> > [Non-text portions of this message have been removed]
> >
>
>
>
>
>
> [Non-text portions of this message have been removed]
>

[jim matus]

No the way the question was asked I thought he was asking about the
voltage thru the frame to ground with the engine off. Running @ 1500+
rpms it is 15+ volts. I called Leece-Neville this morning and they
told me to try Norm's Electric in Sacramento I took it to them and
the first thing they saw was that the previous shop had used a no
name regulator. I suspect they used substandered off-shore parts in
it. I should know tomorrow what all they found.Jim Matus 84FC35
Rescue CA -
-- In WanderlodgeForum@yahoogroups.com, David Brady
wrote:
>
> Sorry for this Jim, but I gotta ask, was the engine running when
> you read the 12.32V?
>
> David Brady
> '02 LXi, Smokey
> NC
>
> jim matus wrote:
> >
> > Chuck: The voltage is 12.32 volts same as battery voltage. Jim
Matus
> > 84FC35 Rescue CA -
> > -- In WanderlodgeForum@yahoogroups.com
> > , "Chuck Wheeler"
> > wrote:
> > >
> > > Jim,
> > >
> > >
> > >
> > > What is the voltage from the alternator frame to the + post on
the
> > > alternator?
> > >
> > >
> > >
> > > - Chuck Wheeler -
> > >
> > > 82 FC 31 SB
> > >
> > > Fort Worth, TX
> > >
> > > _____
> > >
> > > From: WanderlodgeForum@yahoogroups.com
> >
> > > [mailto:WanderlodgeForum@yahoogroups.com
> > ] On Behalf Of jim
matus
> > > Sent: Sunday, July 15, 2007 3:55 PM
> > > To: WanderlodgeForum@yahoogroups.com
> >
> > > Subject: [WanderlodgeForum] Engine Alternator overcharging
> > >
> > >
> > >
> > > I am having a problem with my Leece-Neville alternator
> > overcharging. I
> > > had it rebuilt as preventive maint.,it woked ok for about 800-
1000
> > > miles then it started over charging 15-15.5 volts & 80-100amps.
I
> > took
> > > it back to the rebuilder and they said the regulator was bad so
> > they
> > > replaced it. They told me to check the voltage to the small +
post
> > > under the regulator. I was getting about .75 of a volt less than
> > > battery voltage as measured at the big + post. I could not find
> > where
> > > the volt drop was so I ran a new wire from the ignition operated
> > > solinoid above the throttle pedal. The alternator is still
> > > overcharging. We are supposed to leave on Friday for a 4000 mile
> > trip
> > > so this is a big problem. Did Bluebird use a special regulator
> > since
> > > they have Batt. power to the alternator all of the time? The
> > rebuilder
> > > may have installed the wrong regulator. Thanks Jim Matus 84FC35
> > Rescue
> > > CA
> > >
> > >
> > >
> > >
> > >
> > > [Non-text portions of this message have been removed]
> > >
> >
> >
> > ------------------------------------------------------------------
------
> >
> > No virus found in this incoming message.
> > Checked by AVG Free Edition.
> > Version: 7.5.476 / Virus Database: 269.10.6/900 - Release Date:
7/14/2007 3:36 PM
> >
>
>
>
> [Non-text portions of this message have been removed]
>