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04-13-2020, 01:29 PM
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#1
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Senior Member
Holiday Rambler Owners Club
Join Date: Feb 2017
Location: Oregon
Posts: 100
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Generator will not stay running
I have a friend that has a 02 Diplomat with a 7500 watt Onan generator the generator will not stay running as long as he keeps his finger on the start button it will run when he releases the start button it dies any suggestions thank you
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08 Holiday Rambler endeavor skq 400 Cummins
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04-13-2020, 01:39 PM
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#2
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Senior Member
Monaco Owners Club Oklahoma Boomers Club Retired Fire Service RVer's
Join Date: Aug 2017
Posts: 621
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Is there a second start switch? If so try it.
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Jim & Connie, Edmond Oklahoma
2000 Monaco Signature Classic FD/SO 42' / 1969 VW Bug or 2500HD
"My chains are gone, I've been set free"
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04-13-2020, 02:12 PM
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#3
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Senior Member
Holiday Rambler Owners Club
Join Date: Feb 2017
Location: Oregon
Posts: 100
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We have tried the start switch on the dashboard and the one on the generator it does the same thing
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08 Holiday Rambler endeavor skq 400 Cummins
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04-13-2020, 02:30 PM
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#4
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Member
Join Date: Feb 2020
Posts: 41
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Not an expert in these but one thing I know that'll do it is oil pressure switch or low oil
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04-13-2020, 02:41 PM
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#5
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Member
Join Date: Aug 2017
Location: Naples
Posts: 88
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My 7500 would shut down just above a half tank of fuel.
Thats the first thing I would check. I wasted a day trying everything else before I figured that out. I thought they would run until 1/4 tank but not mine.
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04-14-2020, 11:15 AM
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#6
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Senior Member
Join Date: Jun 2012
Location: NorCal
Posts: 3,000
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Ditto on fuel.
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Outbound
2002 Monaco Executive 500 ISM
2004 GMC 2500HD 4X4
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04-14-2020, 03:40 PM
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#7
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Senior Member
Monaco Owners Club
Join Date: Aug 2017
Location: On the road
Posts: 1,920
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Did you look for error codes on the generator? Flashing lights. The codes are listed in the manual. If no codes is his Inverter auto gen start? If the batteries are at full charge or at the charge setting for the gen start it will shut down the generator.
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Full Time 2000 Dynasty Regent FD, 8.3, Banks Turbo, 5" Diameter Exhaust, 475 HP 1425 Torque, FASS system, towing 05 Pilot 1500 Watts solar 800ah lithium & E-Bike
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04-14-2020, 04:14 PM
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#8
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Senior Member
Join Date: Jul 2014
Posts: 35,441
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If it slow on fuel, it shouldn't even start, let alone run with your finger on the switch.
Look for a oil level or pressure switch.
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04-14-2020, 04:29 PM
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#9
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Senior Member
Monaco Owners Club
Join Date: Mar 2015
Location: Apache Junction, AZ
Posts: 148
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Mine would not stay running when low on antifreeze.
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Terry & Linda, 2 dogs Sammy & Ellie Mae 1 cat Martin. '03 Beaver Monterey Newport 39'10" 350 HP with 1050# Torque, Magnum Chassis
Toad, '17 Ford Escape on dolly
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04-15-2020, 09:17 AM
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#10
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Member
Holiday Rambler Owners Club
Join Date: Jan 2020
Location: Hudson, MA
Posts: 96
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Mine shuts down or won't even start if the coach is below a quarter tank of fuel or if the generator low on oil. The fact that it wont start may be a good thing, it is trying to prevent damage to the unit.
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04-15-2020, 10:14 AM
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#11
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Senior Member
Join Date: Apr 2004
Posts: 3,797
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This is a classical Onan failure - assuming the MH gas level is not too low. One solution is to take it to the nearest Cummins-Onan $ervice center, but before that, get on this forum and explore. They are really good with all Onan products:
https://www.smokstak.com/forum/forum...-generators.1/
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George Schweikle Lexington, KY
2005 Safari (Monaco)Trek 28RB2, Workhorse W20, 8.1, Allison 1000 5 spd, UltraPower engine & tranny, Track bars & sway bars, KONI FSD, FMCA 190830, Safari Int'l. chapter. 1999 Safari Trek 2830, 1995 Safari Trek 2430, 1983 Winnebago Chieftain, 1976 Midas Mini
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04-15-2020, 10:17 AM
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#12
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Registered User
Join Date: Mar 2020
Posts: 61
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Oil level to low or high will shut the genny off.
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04-15-2020, 06:18 PM
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#13
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Member
Join Date: Dec 2019
Posts: 32
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Mine did that after I had a service done on it.
They didn't put enough antifreeze back in it so it would keep shutting down.
Check all of your fluids. The overflow tank is obvious but the actual cap for the radiator us under the plate with the switch on it. You have to remove the plate to get to it.
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04-15-2020, 08:35 PM
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#14
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Senior Member
Join Date: Nov 2014
Posts: 1,673
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Step 1. Read posts #7 and #8
You need a logical and coherent diagnostic strategy.
Retrieve any and all fault codes because that will most likely guide you on the correct diagnostic path and a quick resolution to your problem.
and as stated don't get lost on the low fuel/no fuel because as stated in post #8 ......If it it's out of fuel?... it's out of fuel...it's not going to start and stall repeatedly if out of fuel.
You shrould be able to retrieve your fault codes as seen in this video ...even if not the exact same genny as your unit.
Happy Trails
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2004 HR Navagator 500 ISM
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Linear Mode
