Onan Generator 50 Amp- Gasoline Randomly Shuts Down

[fdrperai]

My gasoline Onan generator starts fine even after start AC units and place under a load, but after running awhile shuts off.

It just started doing this. It will not restart until around 10 minutes. The motorhome fuel tank is full, and the oil level in the generator is full.

Any idea what may be the cause of the random shut down?

[dickandlois]

fdrperai,

Welcome to the FMCA Forum!

Could you post the model of your Onan and the make an year of the coach for the group?

Rich.

[desertdeals69]

Check the cooling could be jammed up with something in the blower fan or passages.

[greenbarn1]

Make sure fuel filter and fuel line are in good service. I have seen fuel lines deteriorate and clog fuel filter.

[luandbb]

My 8000 diesel did the same thing. We took it to Cummins/Onan for a software update, which has been noted in a Cummins 'memo'. And, we had to have a new fuel filter installed. Call Cummins and ask and get into a Service Center.

[fdrperai]

Onan Model 5.5 HGJAB1038 B

5500 watts, 60 Hz, 120 volt, 45.8 amp, 3600 RPM

gasoline

2003 Holiday Rambler 34PBD

[dickandlois]

fdperai,

I think this is the link to the Owner / installation manual for your Generator.

http://www.cumminsonan.com/www/pdf/manuals/900-0541B.pdf

Rich.

[fdrperai]

It was the fuel pump. Thanks for all responses. They were a big help.

[dickandlois]

It was the fuel pump. Thanks for all responses. They were a big help.

Thanks for the feedback regarding the failed part !!

Rich.