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12-22-2013, 03:07 PM
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#1
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Senior Member
Join Date: Mar 2013
Posts: 203
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2nd TRIP Problems
We get parked "boondocking", generator on (onan 5500 4.6 hrs total on unit), level up, slide out, ac 1 on, ac 2 on. All is good for 5 min. All of a sudden the generator starts surging. I shut one ac off and its still surging, shut off 2nd ac and still surging. I shut gen off for a min and re fired. Its better but not right so I head out to check and I sense a funny smell like its over heating. I go open the compartment door and then removed the face of the gen and it started working fine.
This should not be needed so can any one offer some insight?
__________________
1st new coach "2014 Thor Hurricane 34j"
Shawn, Tori, Ryan and "Paw's Memory"
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12-22-2013, 04:27 PM
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#2
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Senior Member
Join Date: Oct 2011
Posts: 1,136
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You are stretching it runnimg both air conditioners. Pulling to much for the Gen to keep up.
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12-22-2013, 04:30 PM
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#3
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Senior Member
Join Date: Oct 2002
Location: Madison, MS
Posts: 10,523
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Quote:
Originally Posted by New Hobby
We get parked "boondocking", generator on (onan 5500 4.6 hrs total on unit), level up, slide out, ac 1 on, ac 2 on. All is good for 5 min. All of a sudden the generator starts surging. I shut one ac off and its still surging, shut off 2nd ac and still surging. I shut gen off for a min and re fired. Its better but not right so I head out to check and I sense a funny smell like its over heating. I go open the compartment door and then removed the face of the gen and it started working fine.
This should not be needed so can any one offer some insight?
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Look under / around the unit for a plastic bag or something blocking the air intake. EVERY Onan I've ever used had a warning label on the inside of the cover stating the cover should be in place to ensure proper cooling.
You're right about it should not be necessary to remove the cover.........
Ed
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12-22-2013, 04:54 PM
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#4
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Moderator Emeritus
Ford Super Duty Owner
Join Date: Aug 2000
Location: Bryan, TX when not traveling.
Posts: 22,945
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Quote:
Originally Posted by trackman
You are stretching it runnimg both air conditioners. Pulling to much for the Gen to keep up.
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5500Watts should easily carry t A/C units on the RV.
Ken
__________________
Amateur Radio Operator (KE5DFR)|No Longer Full-Time! - 2023 Cougar 22MLS toted by 2022 F150, 3.5L EcoBoost Tow Max FX4 Lariat Travel with one Standard Schnauzer and one small Timneh African Gray Parrot, retired mechanical engineer
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12-22-2013, 05:07 PM
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#5
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Senior Member
Join Date: Feb 2012
Location: Aiken,SC
Posts: 1,025
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Quote:
Originally Posted by TXiceman
5500Watts should easily carry t A/C units on the RV.
Ken
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X2....I run both of mine on a onan 5500 genny with no problems.
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Good Sam Life Members
Served in U.S.A.F.
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12-22-2013, 06:02 PM
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#6
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Senior Member
Fleetwood Owners Club American Coach Owners Club Spartan Chassis
Join Date: Oct 2009
Location: Fort Pierce, FL
Posts: 1,019
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Is the elevation knob in the correct setting? (Under the carb) that might make it surge.
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Revolution LE 38X C9 Cat
2020 Jeep Gladiator Toad
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12-22-2013, 06:33 PM
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#7
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Senior Member
Join Date: Jun 2011
Location: Phx, Arid~zona
Posts: 11,106
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Just yesterday, I ran both my ACs at the same time. Sounded like I was on 50A service.
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12-22-2013, 07:35 PM
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#8
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Senior Member
Workhorse Chassis Owner
Join Date: Jan 2002
Location: Pacific Northwest or SoCal
Posts: 3,035
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Quote:
Originally Posted by krivanj
Is the elevation knob in the correct setting? (Under the carb) that might make it surge.
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That was my first thought.
Fred
__________________
Fred and Bonnie
2005 Dolphin LX 6375
Abby, Ruffles & Scarlett, "The Cats"
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12-23-2013, 03:32 AM
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#9
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Senior Member
Join Date: Mar 2013
Posts: 203
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Thanks to all and I will check the elevation screw. I am in florida and thor is is Michigan so its a possibility. It did seem to be hotter than I thought it would be.
__________________
1st new coach "2014 Thor Hurricane 34j"
Shawn, Tori, Ryan and "Paw's Memory"
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12-23-2013, 04:26 AM
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#10
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Community Administrator
Join Date: Aug 2009
Posts: 53,429
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How's the oil level? Low oil can overheat a gen. Also how's the filters ( oil and air )?
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Cliff,Tallulah and Buddy ( 1999-2012 )
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12-23-2013, 10:43 AM
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#11
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Senior Member
Join Date: Nov 2005
Posts: 4,063
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Also is the fuel level below half a tank? The fuel pickup for the generator is not in the bottom of the tank and can start sucking air if the tank is less than half full although that condition should not be altered by removong the cover.
__________________
Neil V
2001 Winnebago Adventurer WFG35U
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12-23-2013, 06:35 PM
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#12
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Senior Member
Join Date: Mar 2013
Posts: 203
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Fuel level was not the problem, had a full tank. Oil level I will check Christmas Day when I have a day off
__________________
1st new coach "2014 Thor Hurricane 34j"
Shawn, Tori, Ryan and "Paw's Memory"
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12-23-2013, 10:11 PM
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#13
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Senior Member
National RV Owners Club Ford Super Duty Owner
Join Date: Sep 2010
Location: Horse Town USA, CA.
Posts: 3,781
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Has it ran without any problem since new? Since the surging stopped with the cover off sounds like it was starving for combustion air. As mention by edgray check for intake air blockage. Running it with the with cover off will change the air flow direction and can cause the unit to over heat.
Chuck
__________________
1999 35 ft. Dolphin 5350, F53, Banks System, 5 Stars Tune, Air Lift Air Bags, Koni Shocks, Blue OX TruCenter, TigerTrak track bars F&R, Roadmaster 1-3/4" rear auxiliary sway bar, 2004 F450 Lariat Pickup 6.0 Diesel Crew Cab DRW, 4X4, GVWR 15,000, Front GAWR 6,000, Rear GAWR 11,000, GCWR 26,000,1994 36ft Avion 5er, GVWR 13,700, 2,740 Pin Weight.
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12-23-2013, 10:39 PM
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#14
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Moderator Emeritus
Nor'easters Club Workhorse Chassis Owner iRV2 No Limits Club
Join Date: Oct 2004
Posts: 30,785
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Does the Gen have a summer, winter setting your in FL. not Michigan now.
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