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Old 05-28-2011, 04:45 PM   #1
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Onan diesel generator problems

I have an older diesel pusher (1994 Holiday Rambler) That has developed a problem with the generator (7.5 onan) The generator starts and runs fine as long as the coach is running or at least the ignition is on. Any ideas where to start looking ?


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Old 05-28-2011, 05:12 PM   #2
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It sounds like the connection to the house batteries is bad or the house batteries are bad. That is a good place to start.

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Old 05-28-2011, 05:23 PM   #3
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That was my first thought, I replaced the batteries 2 days ago. thanks, I will take a look at the connections again.
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Old 05-29-2011, 07:10 AM   #4
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The generator fuel pump requires a constant 12v. You apparently have that only while the engine is running, so look to the battery connections for the generator.
Gary Brinck
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