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dunedawg's avatar
dunedawg
Explorer
Jul 30, 2013

Onan Marquis Gold 5500 shuts down after 20 minutes

I have a 2007 Weekend Warrior trailer with an Onan Marquis Gold 5500 gas generator. As I've seen posted in the past, mine will run for about 20 minutes, then shuts down. It shows a 36 error code (gas ...
Toy Haulers
justALnow's avatar
justALnow
Explorer
Jul 30, 2013
Sure sounds like fuel pump to me. I have the same gen, same year and that's what mine did.

Fuel pump gets hot and shuts down, cools off and it will run again, then shut off again when it heats up.


Simple test - when it shuts down, hit the prime button and listen for the pump. If it's not running, that's your problem.

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