Forum Discussion

jmcgilvary's avatar
jmcgilvary
Explorer
Aug 14, 2017

Onan Gen Shuts Off

02 Fleetwood Bounder 36'
Onan 5KW

For some reason, of late, the Generator starts, carries a load (A/C's) but after 10-15 minutes, it shuts off.
No idea why.
Plenty of fuel, nothing has changed in the configuration in the last 3 years.
'Thoughts? Tips?
Thanks
Class A
  • jmcgilvary's avatar
    jmcgilvary
    Explorer
    Aug 14, 2017
    OK, seems like a reasonable idea!
    Thanks, I will as soon as I get home.
  • SAR_Tracker's avatar
    SAR_Tracker
    Explorer
    Aug 14, 2017
    Could still be fuel issue. Take a fuel suction from a can (bypassing the fuel tank, lines, and filter(s)), and see if it runs longer. If so, I'd bet on 15 year old fuel lines collapsing from age and ethanol fuels.
  • schwartzworld's avatar
    schwartzworld
    Explorer
    Aug 14, 2017
    I'm going to say it's the fuel pump. Unit heats up, the pump gets hot and stops pumping fuel. Fairly easy to replace.
  • jmcgilvary's avatar
    jmcgilvary
    Explorer
    Aug 14, 2017
    OK, where would I find a schematic/idea on changing? I imagine something in my Bounder package might have it, if not WWW?
  • 1995brave's avatar
    1995brave
    Nomad
    Aug 14, 2017
    You need your generator serial number. You can either do a google search on the first part of the serial number or try the onan website, used to be www.onan.com, may have changed now.
  • gbopp's avatar
    gbopp
    Explorer
    Aug 14, 2017
    Don't forget to change your generator fuel filter. If the rubber lines are collapsing you may be pulling pieces of rubber into the filter.
    If not, it's time to change the filter anyway. :)
  • LVJ58's avatar
    LVJ58
    Explorer
    Aug 14, 2017
    SAR Tracker wrote:
    Could still be fuel issue. Take a fuel suction from a can (bypassing the fuel tank, lines, and filter(s)), and see if it runs longer. If so, I'd bet on 15 year old fuel lines collapsing from age and ethanol fuels.


    Good trouble shooting advice. Had the same problem with the genset in our 2000 coach, turned out to be cracks in fuel line from tank allowing air info the fuel line. Replaced fuel line and problem solved.

    Good luck and let us know the fix.

About Motorhome Group

38,705 PostsLatest Activity: Jan 20, 2025