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Old 12-01-2020, 01:15 PM   #1
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Monaco Owners Club
Ford Super Duty Owner
Join Date: Mar 2010
Posts: 24
Angry Onan 4000 Microquiet quits

I have an Onan 4000 microquiet generator in my 2008 JAYCO Melbourne 29D. For many years, I had no problem with it at all, but recently it has developed one. It starts and runs fine - as it should- if the temperature outdoors is below 72-75 degrees. Above that, it will start, run for a short time and quit. It will not restart until it cools down, and if the temp stays above 75, it won't run at all. It is apparent that this is a heat related problem, but how to solve it is a mystery. Anyone have the same problem? Any suggestions for fixing it???
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Old 12-01-2020, 03:24 PM   #2
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Join Date: Feb 2012
Location: Long Island, NY
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I had the same generator in my 2004 Jayco Greyhawk. It also ran for a short time and then quit. It was the electric fuel pump. It was located on the left side of the generator.
2016 Jayco Greyhawk 29MV
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onan, quiet

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