Onan Generator problems:
6.5 NHE-FA/26100 P
S/N; G980768473
Emerald Plus 6500
RV particulars: 1999 Winnebago 37G
Driveline: Ford V10
Miles: 61000
Break Down Description: This generator will run for about 10 minutes or so and then the RPM will start to fluctuate and the unit shuts down.
Symptoms: It use to seem to only happen while driving so I disconnected the remote control function just to be sure. No change. Recently as I just drove from the campsite to the dump station and while I was occupied with my "duties" it went unstable and shut down. Generally it will not immediately restart. You have to wait 10 to 15 minutes and then it might restart. My DW tried to restart it after about 5 minutes only to have it start but it never stabilized and just shut down.
Parts changed: Control board, voltage regulator, ignition coil, spark plugs, plug wires, fuel filter, air filter, oil and oil filter.
Cause: Fuel pump.
Outcome: Well I gave up and took it to a shop. $250 and a new fuel pump later we're fixed. Apparently the fuel pump would heat up and quit. Once it quit, the mechanic removed it and hooked it up to a battery. It was DOA. Ran it all the way home including a few stops along the way, about 1.5 hours, and it didn't miss a lick.
BTW... I want to say how well we were treated at the shop. ATI Machine in Lancaster, Ohio.