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06-19-2015, 02:30 PM | #1 |
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Onan Marquis Gold 7000
Help,
While pulling a full load (2 A/C units, and stuff) my generator runs fine for about 30-45 minutes. Then just shuts off. It doesn't give any codes. It restarts immediately. I thought it may be getting hot. I put a fan on it and it seems better until I turn on the second A/C unit. Any thoughts? Dan |
06-19-2015, 10:43 PM | #2 |
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Re: Onan Marquis Gold 7000
Almost the same deal changed regulator and that fixed everything
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06-20-2015, 08:11 AM | #3 |
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Re: Onan Marquis Gold 7000
If it shuts of immediately it is the Control Board. A common problem. Heat does cause it to fail. I have changed many of them. The machine might have low hours as I have changed them on fairly new machines as well as ones with many hours.
300-5047 is the part number up until about 2 years ago. Easy to change but a very expensive part. You can buy a Cummins-Onan part or now an aftermarket is available... http://www.partsfortechs.com/asapcar...yword=300-5047
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Rich Biebel S/C 1479 |
06-20-2015, 03:31 PM | #4 |
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Re: Onan Marquis Gold 7000
Dan,
With Rich's help I was able to resolve the problems on my Marquis Gold 7000. I had replaced the control module with the factory replacement. A few years later same issue but worse, as the generator would not restart until everything was back down to ambient temp. I then replaced the control module with the ASAP. Problem solved. I had codes that were misleading with the OEM module. If you are bored, http://classracer.com/classforum/showthread.php?t=41189 Sean
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Sean Marconette 84 Mustang 5060 SS/N |
06-22-2015, 10:43 PM | #5 |
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Re: Onan Marquis Gold 7000
It's unusual because it would restart immediately after shutting down. I even put a fan blowing on the genset but that didn't seem to help. I replaced the fuel filter and the generator ran better the next day. I'm going to pull it out and check the plugs and make sure there aren't any obstructions restricting the air flow.
Thanks for all of the suggestions and help. Dan |
06-22-2015, 10:59 PM | #6 |
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Location: Texas
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Re: Onan Marquis Gold 7000
Sean,
I read your link. I have suspected that could become a problem. When I put a fan on it I try to place it so it blows the exhaust away from the inlet. I am going to fabricate a duct to deflect the exhaust away from the air intake. Thanks for the help. Dan |
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