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Old 04-24-2015, 10:53 AM   #15
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Circuit breaker tripping would drop volts to zero; not to 10.

JM2CW. Battery. any load on coach batteries that could drop volts that fast would smoke the wiring, or blow the fuses in the circuit.
On a chassis battery that kind of load could only be from the starter cranking the engine.
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Old 04-24-2015, 10:56 AM   #16
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Quote:
Originally Posted by vfauto View Post
When it does it it drops from 12.9 to 10 in less than a minute
That sounds like it would have to be a short to drop voltage that quickly. Does it do this continuously or just once in awhile? Do you have a converter/charger or inverter/charger?
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Old 04-24-2015, 11:28 AM   #17
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The voltage Will drop and will make it down to a certain amount around 10 then everything will shut off


Quote:
Originally Posted by Skip426 View Post
Circuit breaker tripping would drop volts to zero; not to 10.

JM2CW. Battery. any load on coach batteries that could drop volts that fast would smoke the wiring, or blow the fuses in the circuit.
On a chassis battery that kind of load could only be from the starter cranking the engine.
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Old 04-24-2015, 11:30 AM   #18
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When in this situation, I always start from the beginning. Start by load testing the coach batteries. If good, work down the circuit from the coach batteries to the EMS. There is an auto reset fuse in that part of the circuit.
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Old 04-24-2015, 03:40 PM   #19
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Thank you everybody I'm leaning towards one bad battery because I can make it do it just by puting a heavy load on it. unfortunately I'm nowhere near a load tester so when I get on the road tomorrow or Sunday I will stop and have the battery tested
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Old 04-28-2015, 03:26 PM   #20
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Problem resolved

After a long hard look I went the dealer and the tech and I troubleshoot the problem. It was two nuts missing on two 12v circuit breakers under the hood. Installed the two nuts missing from the factory and all is well. Can not believe it made it as long as it did.
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Old 04-29-2015, 04:29 PM   #21
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Thanks for reporting back on the cause of your problem.
A little heat and a few bumps in the road and a poor connection will show up.
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