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Johng38 01-03-2021 08:12 PM

I had a similar problem one time on a 6" diesel trash pump and the problem was the oil pressure sensor. The oil level can be full but the engine will automatically shut down if the sensor is not working properly and senses low or no oil pressure.

borndae2 01-03-2021 08:22 PM

Had the same problem. Took RV to Billy Thibodeaux’s Premier RV in Scott, Louisiana. They ran a camera down the “drop tube” in RV diesel tank where generator draws diesel and found A hole had rusted in tube which caused generator to catch air. Changed tube and no problem.

JimWW 01-03-2021 10:05 PM

read the thread
Obviously lots of you guys are not reading the thread before posting. If you go back about 2 and a half pages you will see that the OP got it fixed and is back on the road.

But FYI... when mine did this. Cummins replaced the fuel pump.

DougJames65 01-04-2021 03:40 AM

Check your oil level. W had the same problem about a year ago. Lights on start button were flashing code 2 which means low oil pressure. Check out the trouble codes on Our oil was 1/2 a quart low, added oil and that fixed our problem.

Bazou7101 01-04-2021 08:04 AM

Generators low oil pressure shut down have a short delay because the pressure is not there on start up, check to see your low oil pressure switch is not defective.

Old Scout 01-04-2021 08:13 AM

….this horse has left the barn--problem solve 20 posts ago--right or wrong, Cummins installed new control module....time to move on….

gofastnow 01-04-2021 08:23 AM

Another add to the genset shutting down syndrome---I had a mud dabber make a nest in fuel tank's vent line. Gen would run for about 30 minutes and shut down for lack of fuel.

2upServant 01-04-2021 09:03 AM

mine would do that and what I found was a pinch in the fuel line. look to see if your fuel line may have been pitched or bent. starving the motor for fuel and shutting it down until the fuel get filled back up.

georgeblack 01-04-2021 10:03 AM

I have the Onan 7500 and same thing happened to me once. My coolant was low. Topped
up and started right up. Good ever since (2 years ago) Good luck.

Bulletman911 01-04-2021 09:03 PM

Hello I had the same problem after changing the oil. Found out from another person the dip stick on this generator was marked wrong. The low mark is the full mark. If there is too muck oil in the crank case the oil foams up and sensors sends error signal to the onboard computer and shuts engine down. Mine would run for a few minutes and shut down. Then I would restart right away and it would shut down again. I drained out about a pint of oil and been running great again. Didn't have that problem tiil I had changed the oil. Is good now
Hope this helps. Dave G.

bobcor 01-05-2021 12:26 PM

Check flashing code light first on switch. If no code I would bet you have a clogged fuel filter. Must be changed every 500hrs. They do clog up. It has happened to me. Easy to change. I assume all fluids are normal.

Old Scout 01-05-2021 03:34 PM

81 post--40 more since the problem was solved--does anyone read the thread before posting?

dennismhamm 01-05-2021 03:35 PM

1 Attachment(s)
Just to add. Cummins claims that the faulty house inverter is the reason for the gen inveAttachment 313561rter controller going out.

twinboat 01-05-2021 03:41 PM

My generator stays running.

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