RV News RVBusiness 2021 Top 10 RVs of the Year, plus 56 additional debuts and must-see units → ×
RV Trip Planning Discussions

Go Back   iRV2 Forums > MOTORHOME FORUMS > Class A Motorhome Discussions
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 05-26-2018, 08:09 PM   #1
Senior Member
 
Join Date: Jul 2009
Posts: 567
Onan qd 7500 advice please

I need the part number for the temp sensor, and is the sensor the same as 3 cylinder kabota. I'm at the first week of a 6 month trip around the south west.
Thanks in advance
__________________
John, Pat and the cat named BOO
1999 34 MONACO WINDSOR SL
HONDA FIT in tow
johnboy2 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 05-26-2018, 08:29 PM   #2
Senior Member
 
Join Date: Jul 2012
Posts: 594
Quote:
Originally Posted by johnboy2 View Post
I need the part number for the temp sensor, and is the sensor the same as 3 cylinder kabota. I'm at the first week of a 6 month trip around the south west.
Thanks in advance
johnboy I had mine replaced at Cummins of Ocala, The part# is 193-0318 Temp sensor. And yes mine is a 3 cyl. kabota. It would crank up and run 5 minutes and shut off. I could restart it and it would do the same. It was throwing a 24 code which is the temp sensor not resopnding
__________________
Mark
2002 40 PWD Monaco Windsor
Flat Towing 2016 GMC Canyon 4x4
mlh2013 is offline   Reply With Quote
Old 05-26-2018, 09:00 PM   #3
Senior Member
 
Join Date: Jul 2009
Posts: 567
Quote:
Originally Posted by mlh2013 View Post
johnboy I had mine replaced at Cummins of Ocala, The part# is 193-0318 Temp sensor. And yes mine is a 3 cyl. kabota. It would crank up and run 5 minutes and shut off. I could restart it and it would do the same. It was throwing a 24 code which is the temp sensor not resopnding
Thanks for the pn, mine will run between 2 and 4 or 5 hrs and throws a 33 code. I'm not sure thats the problem but I'm going to get a sensor in case I need to have a non cummins shop to fix it.
__________________
John, Pat and the cat named BOO
1999 34 MONACO WINDSOR SL
HONDA FIT in tow
johnboy2 is offline   Reply With Quote
Old 05-26-2018, 09:27 PM   #4
Member
 
TNMike's Avatar
 
Monaco Owners Club
Holiday Rambler Owners Club
Join Date: Apr 2010
Location: Lenoir City TN
Posts: 87
Quote:
Originally Posted by johnboy2 View Post
Thanks for the pn, mine will run between 2 and 4 or 5 hrs and throws a 33 code. I'm not sure thats the problem but I'm going to get a sensor in case I need to have a non cummins shop to fix it.
Might be the water pump belt
__________________
Mike, Cindy, Spunky (Cocker Spaniel)(RIP) and Naro (Cat)
2002 Holiday Rambler Endeavor
[SIGPIC][/SIGPIC]
TNMike is offline   Reply With Quote
Old 05-26-2018, 09:39 PM   #5
Senior Member
 
Join Date: Oct 2016
Posts: 2,834
Quote:
Originally Posted by johnboy2 View Post
Thanks for the pn, mine will run between 2 and 4 or 5 hrs and throws a 33 code. I'm not sure thats the problem but I'm going to get a sensor in case I need to have a non cummins shop to fix it.

33 is not an assigned fault code. Consult the owners manual to determine the correct code.
__________________
2005 Alpine Coach 36MDDS
2015 Grand Cherokee Diesel
RVPioneer is offline   Reply With Quote
Old 05-26-2018, 09:49 PM   #6
Senior Member
 
FIRE UP's Avatar


 
Join Date: Dec 2009
Location: Out there, somewhere
Posts: 8,374
Quote:
Originally Posted by johnboy2 View Post
Thanks for the pn, mine will run between 2 and 4 or 5 hrs and throws a 33 code. I'm not sure thats the problem but I'm going to get a sensor in case I need to have a non cummins shop to fix it.
johnboy2,
Code "33" is an "overheat" condition. When venturing through the service manual, code 33 can be caused by multiple circumstances. Clogged intake, clogged discharge air vent, temp sensor, and there's more but, I've forgotten all of them. Anyway, I don't know how much you know about that sensor, its location and, what a serious pain in the a$$ it can be to extract. If your generator is on a slide, you're miles ahead of the rest of the gang that doesn't have that advantage. If your's isn't, well, get ready for some serious work.

Some of them, like mine, faught me for hours trying to extract it. Some screw right out like it was installed that morning. Now, if you're going to have a shop do it, well, again, be prepared. That sensor, if you don't know what it looks like, it's just about the same dimensions as a lawn mower spark plug. It ain't much in size but, it sure can cause some heartaches. Good luck on yours.
Scott


On edit: From the service manual:


No. 2—Low Oil Pressure

No. 23—Oil Pressure Switch Fault

No. 24—Temperature Sender Fault

No. 33—High Engine Temperature Fault
__________________
2004 ITASCA HORIZON 36GD, 2011 GMC Sierra 1500 4x4 Toad '18 Honda Africa Twin Adventure Sports DCT
Retired-29.5 yrs, SDFD, Ham - KI6OND
Me, Karla and the Sophie character, (mini Schnauzer)
FIRE UP is offline   Reply With Quote
Old 05-27-2018, 06:43 AM   #7
Senior Member
 
veraken's Avatar


 
Monaco Owners Club
Vintage RV Owners Club
Holiday Rambler Owners Club
Join Date: Jul 2012
Location: Lexington, SC
Posts: 1,994
If you go to "More" above, then "Files" and search on Onan, you will find a parts list for your generator as well as other downloads which might help you.
__________________
Vera & Ken
1998 Holiday Rambler Imperial, RR8S Chassis
Cummins 6C8.3 mechanical engine, 325HP, 3060 Allison
Towing 2014 Ford Explorer
veraken is offline   Reply With Quote
Old 05-27-2018, 07:21 AM   #8
Senior Member
 
Join Date: Jul 2009
Posts: 567
Thanks for the info all. What is ment ( more above , click on files )?
__________________
John, Pat and the cat named BOO
1999 34 MONACO WINDSOR SL
HONDA FIT in tow
johnboy2 is offline   Reply With Quote
Old 05-27-2018, 08:40 AM   #9
Senior Member


 
Monaco Owners Club
Join Date: Mar 2018
Location: Blairsville, GA & WPB, FL
Posts: 3,553
Send a message via ICQ to Ivylog
There is a “files” section at the top of this page (right under your qd 7500)...click on it then electrical and then search onan 7500.
__________________
This post is my opinion, worth what you paid for it.
Our New ride...08 HR Navigator 45. A nice upgrade after 14 years with a 04 Dynasty 42.
Ivylog is offline   Reply With Quote
Old 05-27-2018, 06:03 PM   #10
Senior Member
 
Join Date: Jul 2009
Posts: 567
Must only be on the full site I'm on the and using the app
__________________
John, Pat and the cat named BOO
1999 34 MONACO WINDSOR SL
HONDA FIT in tow
johnboy2 is offline   Reply With Quote
Old 05-28-2018, 08:37 AM   #11
Member
 
Newmar Owners Club
Join Date: Apr 2015
Posts: 59
I also had a code 33. It could be the fan belt, temperature sensor, thermostat or radiator cap.
I ordered them all. The radiator cap I found at Auto Zone. The rest I ordered on eBay.
Diesel temp. sensor Thermostat Kit A046Z961, 193-0318, 185-2238, Fan belt 511-0235.
You will need to remove the back and top panels. Also loose the side panel to access the fan belt and temp. sensor. The radiator cap was easy. It is under the control panel on the front of the generator. Along with flushing the radiator system, I completed this in an afternoon. In my case, I found a well worn fan belt may have been the problem, but while it was disassembled I replace the other items. While flushing the system, I was amazed at how dirty the coolant was when I drained it.
__________________
2004 Newmar Mountain Aire 4018
ccusa is offline   Reply With Quote
Old 06-21-2018, 09:36 PM   #12
Member
 
Join Date: Apr 2018
Posts: 35
Its always a good idea to clean to the actual radiator surface fins while the shroud is off.
I had a bunch of crud and so did the rv Ive been doing repairs on for a fellow.
I also had a issue using an infrared temp gun you can easily spot the issue. top hose vs bottom hose or a hot spot clogged rad bad term.
Ed
edfirebird68 is offline   Reply With Quote
Reply

Tags
advice, onan



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 7500 Quiet Diesel quit!! advice needed tomtomlab Monaco Owner's Forum 24 07-28-2017 01:52 PM
Onan 7500 dies during rain and high humidity. Please Help! MidwestTexan iRV2.com General Discussion 3 07-14-2017 12:39 AM
Need help with Onan 7500 quiet generator, please Sloopie1 Class A Motorhome Discussions 10 06-30-2015 10:40 AM
Onan 7500 problem Pusherpilot Monaco Owner's Forum 2 10-20-2009 10:13 PM
Onan 7500 GenSet - Maintainance?? H. Miller MH-General Discussions & Problems 3 04-17-2009 10:16 PM


All times are GMT -6. The time now is 03:26 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, vBulletin Solutions, Inc.