Go Back   iRV2 Forums > THE OWNER'S CORNER FORUMS > Newmar Owner's Forum
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
 
Thread Tools Search this Thread Display Modes
 
Old 09-17-2017, 07:39 AM   #1
Senior Member
 
STEVE-JUNELL's Avatar
 
Join Date: Mar 2013
Location: Wakarusa IN
Posts: 387
Need some generator advice

I have a 12,500 Onan diesel generator and it runs fine while driving down the road but after stopping last night for the night it died 15 minutes after being parked and today I just drove 6 hours runs fine parked and about 15 minutes later same thing you can restart it but runs for a few seconds and shuts off. Any ideas ??
__________________

__________________
08' Newmar EXDP 4502 14 Silverado crew, 06 Rubicon, or 28' enclosed ATC trailer
STEVE-JUNELL is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 09-17-2017, 07:44 AM   #2
Senior Member
 
Join Date: Jun 2017
Location: Northeast CT
Posts: 365
low oil shutdown is possible.....parked the oil level sensor is not making contact with oil but moving it is ? it's just a guess....

the start up and stop after a few minutes thing, on a gas genny at least, is indicative of a failing fuel pump...but moving or not moving should not matter with that....i should think, anyways.....unless it's a fuel tank venting issue...the movement of the fuel while in motion is providing a better venting for the tank...again, another guess...

i would do the obvious first...check fluids and filters....you keep up proper service intervals, i imagine ?
__________________

__________________
2018 Dutch Star 4326 K2
2014 Wrangler Unlimited Rubicon or 2015 F150 King Ranch
Doing my part to help control the flying insect population......
willipaul is offline   Reply With Quote
Old 09-17-2017, 07:44 AM   #3
Senior Member
 
ewlee's Avatar
 
Join Date: Nov 2015
Posts: 319
Quote:
Originally Posted by STEVE-JUNELL View Post
I have a 12,500 Onan diesel generator and it runs fine while driving down the road but after stopping last night for the night it died 15 minutes after being parked and today I just drove 6 hours runs fine parked and about 15 minutes later same thing you can restart it but runs for a few seconds and shuts off. Any ideas ??
What was your fuel level when you stopped for the night? 1/4 tank and you are done.
__________________
Wayne, Cindy, & Golden Retriever Finn
2017 London Aire, 2014 CRV, Go Hokies
ewlee is offline   Reply With Quote
Old 09-17-2017, 07:48 AM   #4
Senior Member
 
Fleetwood Owners Club
Join Date: Jul 2003
Location: NY
Posts: 571
Just a wild hair first guess. Overheating . Running down the road the front mounted genny gets plenty of cooling air . When stationary not so much . Obvious first check, which I'll bet you have done , is to check water levels and debris in radiator. One poster recently found a plastic bag in the genny air intake . Overheating shutdown sensor could be malfunctioning .
__________________
08 Diesel Bounder 38V
phranc is offline   Reply With Quote
Old 09-17-2017, 07:50 AM   #5
Senior Member
 
Capt. Bill's Avatar
 
Join Date: Jun 2009
Location: Highland,IL.
Posts: 354
I suspect low diesel fuel level in the tank is your culprit- moving it sloshing around so the diesel pickup tube can suck some up. Sitting still it's dropping below the pickup tube.

Fill it with diesel & see if it happens again?

Happy Trails
__________________
Capt. Bill
2014 Newmar Mountain Aire Diesel 4364
2009 Ram 1500 Crew cab toad
Capt. Bill is offline   Reply With Quote
Old 09-17-2017, 07:50 AM   #6
Senior Member
 
Pa Miller's Avatar


 
Monaco Owners Club
Vintage RV Owners Club
Join Date: Feb 2015
Location: East Texas
Posts: 621
fuel Venting x2
__________________
1995 Monaco Dynasty
32' B5.9 Banks, 6 speed Alison 3060
2008 HHR Panel toad
Pa Miller is online now   Reply With Quote
Old 09-17-2017, 08:30 AM   #7
1977-2006
 
USMCRET's Avatar


 
Newmar Owners Club
Join Date: Jul 2011
Posts: 1,389
Steve, have you tried to get the codes? The on/off switch should flash a code when it shuts off without command.
__________________
2005 Newmar KSDP 3910
ISC on a Spartan
USMCRET is offline   Reply With Quote
Old 09-17-2017, 10:31 AM   #8
Senior Member
 
STEVE-JUNELL's Avatar
 
Join Date: Mar 2013
Location: Wakarusa IN
Posts: 387
I'm at 3/4 of a tank right now was lower when I left earlier and was running fine. I just did a full service on it air fuel and oil a few weeks ago before my last trip I pulled the codes and it's a fault code 36 all fluids look good for kicks I tried restarting the coach and it's not staying running now I'm wandering if the fuel pump is getting hot and shutting down when it's parked
__________________
08' Newmar EXDP 4502 14 Silverado crew, 06 Rubicon, or 28' enclosed ATC trailer
STEVE-JUNELL is offline   Reply With Quote
Old 09-17-2017, 11:38 AM   #9
Senior Member
 
Join Date: Jun 2017
Location: Northeast CT
Posts: 365
Quote:
Originally Posted by STEVE-JUNELL View Post
I'm at 3/4 of a tank right now was lower when I left earlier and was running fine. I just did a full service on it air fuel and oil a few weeks ago before my last trip I pulled the codes and it's a fault code 36 all fluids look good for kicks I tried restarting the coach and it's not staying running now I'm wandering if the fuel pump is getting hot and shutting down when it's parked
for kicks, remove one or both of the fuel fill caps when you are parked....see if it stays running.....i think the fuel pump is dying and will need to be replaced....not overheating....doesn't have enough power to overcome the vacuum in the tank through the vents...
__________________
2018 Dutch Star 4326 K2
2014 Wrangler Unlimited Rubicon or 2015 F150 King Ranch
Doing my part to help control the flying insect population......
willipaul is offline   Reply With Quote
Old 09-17-2017, 12:21 PM   #10
Senior Member
 
Pa Miller's Avatar


 
Monaco Owners Club
Vintage RV Owners Club
Join Date: Feb 2015
Location: East Texas
Posts: 621
Quote:
Originally Posted by willipaul View Post
for kicks, remove one or both of the fuel fill caps when you are parked....see if it stays running.....i think the fuel pump is dying and will need to be replaced....not overheating....doesn't have enough power to overcome the vacuum in the tank through the vents...
x2 and the vac line could be stopped up. Unscrew the vac line from tank the float could be sticking shut after you turn M/h engine off mine was..
__________________
1995 Monaco Dynasty
32' B5.9 Banks, 6 speed Alison 3060
2008 HHR Panel toad
Pa Miller is online now   Reply With Quote
Old 09-18-2017, 07:44 AM   #11
Senior Member
 
BrokeDown's Avatar
 
Join Date: Mar 2016
Location: North Fort Myers, FL
Posts: 154
Where is the fuel tank vent?

I have an Onan 10K that is shutting down randomly. It does not seem to be related to parked or moving. I took it to Tropical Generator in Fort Myers. They charged me $1,200 to remove the gen set and diagnose/fix the problem. They found that the coupling between the fan drive and the fan was bad. While they had the gen set out, they did an oil change and replaced the air and fuel filters.

Once they got the generator back into the motorhome, we ran it for a bit and all seemed well..... A few months later, we left Florida and headed to Maine, the problem is the still there.

I too get the 36 code. I tried removing the fuel caps, disconnecting the coach control electrical connection and running it with the gen set tray out. I have a fuel pump for it and will replace it next. I may also replace the fuel lines while I am under there.

Good luck with your generator, keep us posted.

John
__________________
2008 MADP 4523 NKK 21336
2016 Jeep Rubi HR Unlimited Toad
RVers since 4/16/16
BrokeDown is offline   Reply With Quote
Old 09-18-2017, 08:52 AM   #12
Senior Member
 
Pa Miller's Avatar


 
Monaco Owners Club
Vintage RV Owners Club
Join Date: Feb 2015
Location: East Texas
Posts: 621
There should be about five lines coming out of your fuel tank , One of those has a line that just runs to the bottom of your Rv thats the vent line . Take the hose off then unsrew the fiting from the tank There is a float valve attached to it it could be stuck and check that hose for dirt dauber nest..
__________________
1995 Monaco Dynasty
32' B5.9 Banks, 6 speed Alison 3060
2008 HHR Panel toad
Pa Miller is online now   Reply With Quote
Old 09-18-2017, 09:01 AM   #13
Senior Member
 
Monaco Owners Club
Join Date: Aug 2016
Posts: 120
x2 on overheating. I have the same unit, and I had the same issue. Turned out to be a lose fan belt. It requires the removal of the top and PS covers, which at that point you might as well just change the belt. Once I tightened the belt, I had a noticeable increase in air flow that could be felt in front of and to the sides of the motorhome at ground level. I completed the entire repair in a Home Depot parking lot in about 50 minutes. Always a good idea to have a spare fan belt anyway. A good cleaning of the radiator is in order as well.
__________________
2002 Monaco Executive
Cummins 500ISM (11L)
Castle Rock, CO
kgchampagne is offline   Reply With Quote
Old 09-18-2017, 09:27 AM   #14
Senior Member
 
FORTRIDER's Avatar
 
American Coach Owners Club
Join Date: Jun 2014
Location: N Rim of the Poudre
Posts: 124
I had problems with our generator at one point in time. Downloaded the manuals and went through the troubleshooting section and resolved the problem pretty quickly. Turned out to be a $32.00 transformer. My issue was that it would start and run only for a few seconds. The price for the repair and service manuals was money well spent.
__________________

__________________
2009 Essex - Bordeaux
2015 Jeep Sahara- Really RED all over.
2016 Moto Guzzi Stornello 2015 Ducati Scrambler
FORTRIDER is offline   Reply With Quote
Reply

Tags
advice, generator



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Need some winter camping advice LarryGodby Excel Owner's Forum 20 01-17-2009 05:52 AM
New owner/older motorhome - need some advice panacea97 MH-General Discussions & Problems 7 06-01-2007 02:42 PM
Need some advice minnow69 Toy Haulers Discussion 7 06-17-2005 07:48 PM
Need some trip advice ~ CactusCampin' Travel Trailer Discussion 4 05-18-2005 03:05 PM

» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 01:41 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.