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ljr869's avatar
ljr869
Explorer
Apr 22, 2017

The dreaded code 36

Onan Marquis Gold 5500 runs for 3 to 10 minutes then surges and dies. Code 36 means it shut down without being told to. Plenty of clean fuel, just changed fuel filter, pump primes, clean air filter, proper oil level. I'm guessing it's carburetor related seeing as it occurs once it gets to operating temp. That's a bit above my expertise so into the shop it goes.
Class A
  • wynnd's avatar
    wynnd
    Explorer
    Apr 22, 2017
    Same thing happened to my 2007....replacing the fuel pump did the trick.

    Good Luck!
  • WyoTraveler's avatar
    WyoTraveler
    Explorer
    Apr 22, 2017
    My generator would shut down. Then when cool run again normal. Fuel pump was shuting down when hot. Replaced fuel pump solved the problem. Apparently a problem because of where fuel pump is mounted.
  • YC_1's avatar
    YC_1
    Nomad
    Apr 22, 2017
    If it has a radiator did you replace the coolant? If so, could be air in the system letting it get hot. Just a thought.

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