Home » Public Forums » GMCnet » [GMCnet] Need some input
| [GMCnet] Need some input [message #138210] |
Tue, 09 August 2011 20:31  |
SergeL
Messages: 169
Registered: January 2011
Karma: 0
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Senior Member |
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I am still working on my 73 GMC, The engine battery keeps going dead over 3
to 4 days. I have disconnected all house wiring and turned off all breakers
in back and pulled all fuses to house system. What if anything up front
would cause current draw with everything turned off? The battery relay is
not energized, radio un pluged, 2nd battery, same problem.
Now today, I have been starting and running motor and going on short trips
to town, 40 miles, this evening I went to move it and it started no problems
and quit running after about 50 feet, will not re-start there is gas going
to carb., any chance this could be related?
Thanks for any input
Serge
1973 GMC
Deming, NM
He who expects no gratitude shall never be disapointed
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| Re: [GMCnet] Need some input [message #138222 is a reply to message #138210] |
Wed, 10 August 2011 01:36  |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
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Senior Member |
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Let's start ast the basics.
First, have you disconnected the enigine battery for 3 or 4 days and then tried to see if it will start the engine when the battery is reconnected? It could be a bad battery.
Second, if it does start then turn every thing off on the engine side and disconnect the battery. Take multimeter on the 10 amp scale and hook it between the disconnected cable and the battery post. What does it read? If it reads very low then reduce the scale and read it again. The reading you get is the amount of draw you have on the battery when the coach is sitting idle.
Now start pulling fuses one at a time looking for the item that is draining your battery.
You can do the same procedure on the house battery.
The house battery and the engine battery are two completely separate systems.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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| Re: [GMCnet] Need some input [message #138231 is a reply to message #138210] |
Wed, 10 August 2011 06:46 |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
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Serge - just for the hell of it, unplug the harness to the alernator for two or three days, and then plug it back and see if the battery has drained or not. A leaky diode while not at all common, can cause this.
A quick and dirty way to find the drain is to disconnect >all< the wires which connect to the battery hot lead. Then one at at time, touch them to the terminal they were connected to. When one draws a spark, you have the one which is drawing current. Chase it down in the same manner till you find the culprit.
--johnny
--- On Wed, 8/10/11, Serge Leduc <greatmoments60@hotmail.com> wrote:
From: Serge Leduc <greatmoments60@hotmail.com>
Subject: [GMCnet] Need some input
To: "gmclist@gmcnet.org" <gmclist@temp.gmcnet.org>
Date: Wednesday, August 10, 2011, 1:31 AM
I am still working on my 73 GMC, The engine battery keeps going dead over 3
to 4 days. I have disconnected all house wiring and turned off all breakers
in back and pulled all fuses to house system. What if anything up front
would cause current draw with everything turned off? The battery relay is
not energized, radio un pluged, 2nd battery, same problem.
Now today, I have been starting and running motor and going on short trips
to town, 40 miles, this evening I went to move it and it started no problems
and quit running after about 50 feet, will not re-start there is gas going
to carb., any chance this could be related?
Thanks for any input
Serge
1973 GMC
Deming, NM
He who expects no gratitude shall never be disapointed
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
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Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
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| Re: [GMCnet] Need some input [message #138241 is a reply to message #138231] |
Wed, 10 August 2011 10:00 |
k2gkk
Messages: 4452
Registered: November 2009
Karma: -8
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Senior Member |
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Hardwired propane and/or carbon monoxide detectors will drain battery!
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
~~ ~ D C "Mac" Macdonald ~ ~~
~ ~ Amateur Radio - K2GKK ~ ~
~ ~ USAF and FAA, Retired ~ ~
~ ~ ~ Oklahoma City, OK ~ ~ ~
~~ ~ ~ "The Money Pit" ~ ~ ~~
~~ ~ ~ (TZE166V101966) ~ ~ ~~
~ ~ ~ ex-Palm Beach, 76 ~ ~ ~
~ www.gmcmhphotos.com/okclb ~
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
> Date: Wed, 10 Aug 2011 04:46:31 -0700
> From: jhbridges@ymail.com
> To: gmclist@temp.gmcnet.org
> Subject: Re: [GMCnet] Need some input
>
> Serge - just for the hell of it, unplug the harness to the alernator for two or three days, and then plug it back and see if the battery has drained or not. A leaky diode while not at all common, can cause this.
> A quick and dirty way to find the drain is to disconnect >all< the wires which connect to the battery hot lead. Then one at at time, touch them to the terminal they were connected to. When one draws a spark, you have the one which is drawing current. Chase it down in the same manner till you find the culprit.
>
> --johnny
>
>
> --- On Wed, 8/10/11, Serge Leduc <greatmoments60@hotmail.com> wrote:
>
>
> From: Serge Leduc <greatmoments60@hotmail.com>
> Subject: [GMCnet] Need some input
> To: "gmclist@gmcnet.org" <gmclist@temp.gmcnet.org>
> Date: Wednesday, August 10, 2011, 1:31 AM
>
>
> I am still working on my 73 GMC, The engine battery keeps going dead over 3
> to 4 days. I have disconnected all house wiring and turned off all breakers
> in back and pulled all fuses to house system. What if anything up front
> would cause current draw with everything turned off? The battery relay is
> not energized, radio un pluged, 2nd battery, same problem.
>
> Now today, I have been starting and running motor and going on short trips
> to town, 40 miles, this evening I went to move it and it started no problems
> and quit running after about 50 feet, will not re-start there is gas going
> to carb., any chance this could be related?
>
> Thanks for any input
> Serge
> 1973 GMC
> Deming, NM
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| Re: [GMCnet] Need some input [message #138305 is a reply to message #138210] |
Wed, 10 August 2011 18:06 |
chasingsummer
Messages: 434
Registered: May 2011
Location: asheboro, nc
Karma: 0
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Senior Member |
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the big power wire that feeds to rear battery, on my 75 it ran across bottom or radiator. insulation looke good til i touched it, then insulation would just fall off. if insulation is that bad would it not drain battery fairly quickly with insulation working more has a resister than an insulator?
brian
asheboro, nc
75 eleganza, 74 build
119k miles and counting,
DOG HOUSE
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| Re: [GMCnet] Need some input [message #138314 is a reply to message #138264] |
Wed, 10 August 2011 19:17 |
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mike miller
Messages: 3576
Registered: February 2004
Location: Hillsboro, Oregon
Karma: 0
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Senior Member |
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| Serge Leduc wrote on Wed, 10 August 2011 09:58 |
... the PO had wires going everyplace, part of the big problem over the
last 4 months to try to undo some of these items. ...
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Rather common problem. 30 some odd years of PO's and "qualified" RV repairmen sometimes have "interesting" results.
Take your time and check everything against the manual for what is "supposed" to be there. If it isn't in the manual AND if you do not know EXACTLY what it does -- remove it.
If all else fails return the coach to OEM.
Mike Miller -- Hillsboro, OR -- on the Black list
(#2)`78 23' Birchaven Rear Bath -- (#3)`77 23' Birchaven Side Bath
More Sidekicks than GMC's and a late model Malibu called 'Boo'
http://m000035.blogspot.com
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