Onan Marquis Gold 5500 on RV starts and dies immediately. Fuel pump and fuel filters are OK. Hooked up remote fuel tank and put voltage on fuel shut-off switch and disconnected a wire going to the back which probably goes to fuel shut-off--it runs in that condition. Fuel pump wire has .07 V. when cranking. Suspect bad circuit board. Where can I get one, hopefully rebuilt?
Electrical Supplies - Watts - Onan Portable Generator - 4000 , Model# 5500
Answers & Comments
Check the hertz if not on 60 it will shut down you can adjust the hertz by adjusting the idle
A1 controller could be suspect, http://www.flightsystems.com/ can get you going with board cheaper than OEM, last longer too.
Does the generator shut down immediately after you let go of the start switch? If so, you are looking at oil pressure / level fault. Check oil level and sending unit. If generator continues to run for a few seconds and then shuts down, that is due to no or low AC voltage being produced and shutdown occurs. Shutdown for AC usually indicates an open winding or damaged voltage regulator.
if the oil level and sensor are ok check the hertz if not on 60 it will shut down also you can adjust the hertz by adjusting the idle. Mine would start and run a little bit and shut down I check several things and discovered my hertz were 57 so I idled it up and when it got to 60 it stayed running I put some thread glue on the idle ***** to keep it from vibrating loose again
Http://www.cumminsonan.com/locator The A1 controller is likely suspect.