Go Back   iRV2 Forums > iRV2.com COMMUNITY FORUMS > iRV2.com General Discussion
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 12-02-2010, 06:19 PM   #1
Junior Member
 
bhfranklin's Avatar
 
Join Date: Oct 2009
Location: Sarasota, FL
Posts: 10
Onan quite diesel 7500 shuts down 45 min

My onan quite diesel with cummins engine shuts down after about 45 minutes of running. It has been serviced in the last couple of months, is full of oil and coolant. The light flashes 3 times which indicates according to the sticker needs service.... The generator has right at 500 hours and starts and runs great,,, for about 45 minutes. Its mounted in a 2000 Edeavor. Doesn't seem to make a difference about how much load. I also noticed both rear jacks leaking fluid this trip so I'm looking for my wallet.... Thanks in advance for any ideas.

Bill
__________________

__________________
Bill and Lynda Franklin
2000 38' Endeavor 330 Cat
2005 Jeep Rubicon
bhfranklin 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 12-02-2010, 08:25 PM   #2
Member
 
carmantx's Avatar
 
Fleetwood Owners Club
Join Date: May 2010
Location: Boerne, TX
Posts: 32
I did some research on this because ours will shut down also. Two things I would do.
1. get all air out of the cooling system. Squeeze the exposed coolant hoses many times with the cap off. (gen not running). After that, run the generator for a while with the cap off
2. these have known issues with the thermostat sending unit. If 1 doesn't work, then try to replace the sending unit.



Good luck. number 1 worked for us, but I will probably order the thermo unit just in case.
__________________

__________________
99 American Tradition 40'
Usually pulling a Buick
carmantx is offline   Reply With Quote
Old 12-02-2010, 11:28 PM   #3
Moderator Emeritus
 
Gary RVRoamer's Avatar


 
Join Date: Jan 2000
Location: Silver Springs, FL. USA
Posts: 18,073
The "3" is just the first part of the trouble code - you need to get the second digit to find out what is wrong. See page 22 of the Onan Service manual for info on reading the secondary code and what they mean. Download here if you don't have it:

http://www.cumminsonan.com/www/pdf/m.../981-0161C.pdf

Some likely causes are overheating or low oil.
__________________
Gary Brinck
Former owner of 2004 American Tradition
Home is in the Ocala Nat'l Forest near Ocala, FL
Summers in Black Mountain, NC
Gary RVRoamer is offline   Reply With Quote
Old 12-03-2010, 09:49 AM   #4
Junior Member
 
bhfranklin's Avatar
 
Join Date: Oct 2009
Location: Sarasota, FL
Posts: 10
Thanks for the input. I did not understand how to get the secondary code. I have down loaded the manual and will get out to the rig and get the rest of the code. That should get me pointed in a direction. I'll report what I find. Thanks again.
__________________
Bill and Lynda Franklin
2000 38' Endeavor 330 Cat
2005 Jeep Rubicon
bhfranklin is offline   Reply With Quote
Old 12-03-2010, 05:39 PM   #5
Senior Member
 
BlueLine's Avatar
 
Winnebago Owners Club
Freightliner Owners Club
Join Date: May 2010
Location: Edenton, North Carolina
Posts: 118
Send a message via Skype™ to BlueLine
Bill,
For a 1 or 3 blink code momentarily press stop to bring up the secondary level. This code consists of 1,2 or 3 blinks. a bried pause, and then 1 to 9 blinks, the combo of the two will be your fault code. Example :blink blink pause blink blink blink = Fault code 23
__________________
"The other" George & Barbara, and the 3 Amigo's
Winnebago Adventurer 34V DP
Edenton, N.C.
BlueLine is offline   Reply With Quote
Old 12-04-2010, 04:19 PM   #6
Junior Member
 
bhfranklin's Avatar
 
Join Date: Oct 2009
Location: Sarasota, FL
Posts: 10
I went out to the rig and checked the code properly. It is code 26, below speed target. The manual says to reduce the load or prime the fuel system. When it shut down only 1 heatpump was running and it was cycling on and off because it wasn't that cool out so I don't suspect load is the issue. I change the fuel filter along with other service about three months ago and didn't have this issue before that. I did bleed the system as described in the manual but it is my intention to bleed it again and run the unit again. With other diesels I have been familiar with in the past if it started and ran it was bled. I guess the newer electronic stuff its different. If this indeed is the issue how do I clear the fault code? I am at the end of vacation so I won't get to work on it til next weekend but I will report what I find. Thanks again for any input.

Bill
__________________
Bill and Lynda Franklin
2000 38' Endeavor 330 Cat
2005 Jeep Rubicon
bhfranklin is offline   Reply With Quote
Old 12-04-2010, 10:19 PM   #7
Senior Member
 
B Bob's Avatar
 
Join Date: Sep 2010
Posts: 1,162
I had a similar problem with my Onan 12,500. It seems the fan belt is hard to get to, at least on our generator it is. So when I had mine serviced a year ago the lazy techs did not bother to check the condition of the fan belt. Finally after complaining many times and replacing two thermostats coolant and so on they looked at the fan belt. Guess what, it was trash. So they replaced that and that was the last time mine shut down. Might be your problem.
__________________
B Bob
Country Coach 42' Affinity
2013 Jeep Wrangler Unlimited
B Bob is offline   Reply With Quote
Old 12-05-2010, 10:41 AM   #8
Junior Member
 
bhfranklin's Avatar
 
Join Date: Oct 2009
Location: Sarasota, FL
Posts: 10
The fault code indacates an issue with the engine not reaching target engine speed as the problem but I intend to check the belt and everything I can get to thourly when I get out there this weekend. My generator does not pull out the front like some do so my only easy access is to go in the service area in the bottom. I'll let you know what I find.

Thanks, Bill
__________________
Bill and Lynda Franklin
2000 38' Endeavor 330 Cat
2005 Jeep Rubicon
bhfranklin is offline   Reply With Quote
Old 12-07-2010, 07:43 PM   #9
Senior Member
 
Downsizer's Avatar
Commercial Member
 
Monaco Owners Club
Join Date: Aug 2010
Location: Travelling the USA
Posts: 269
Also, be sure oil completely FULL... same problem with mine..... only 1/2 qt low, thought all ok,,,,, talked to Onan... needs to be full since it has a shut off system if it gets too low.... 1/2 qt is too low...... fyi....
__________________

__________________
Bernie & Karen https://www.RV-Insight.com
Full Timers - SD Tags - USA
2000 Monaco Windsor 38' Diesel Pusher w/Toyo 4WD
Downsizer is offline   Reply With Quote
Reply



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
Onan 7.5 Quiet Diesel KIX MH-General Discussions & Problems 4 02-06-2010 05:16 PM
Onan Quiet Diesel 7500 Problem Dr4Film RV Systems & Appliances 2 02-01-2010 08:15 PM
Quiet Diesel 7500 Fuel leak Moder2 MH-General Discussions & Problems 6 02-21-2008 04:58 AM
Onan Quiet Diesel Problem Need Help bdpreece MH-General Discussions & Problems 3 01-09-2008 07:07 PM
Cat® C7 Engine To Power Workhorse R Series Diesel Chassis DriVer RV Industry Press 1 12-14-2006 03:56 AM

» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 03:31 PM.


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