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,...
Forum Discussion
It is logical to think that if pump works while priming, then it is not
the problem. However, there is a component in pump that fails when it gets hot (on certain pumps) Airtex does make this pump for Onan. You can get from NAPA. Onan part # is A047N929. From my experience as an ONAN tech (30+years) Your symptoms indicate bad pump, or ...hopefully not....control board. Since pump is 1/4 cost of board, that would be first step. I have had control boards, when they get hot, break down and quit supplying voltage to pump.
the problem. However, there is a component in pump that fails when it gets hot (on certain pumps) Airtex does make this pump for Onan. You can get from NAPA. Onan part # is A047N929. From my experience as an ONAN tech (30+years) Your symptoms indicate bad pump, or ...hopefully not....control board. Since pump is 1/4 cost of board, that would be first step. I have had control boards, when they get hot, break down and quit supplying voltage to pump.
