Go Back   iRV2 Forums > MOTORHOME FORUMS > MH-General Discussions & Problems
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 09-15-2010, 11:11 PM   #1
Junior Member
 
Join Date: Sep 2010
Posts: 27
overheating problem cummins 300

Have a 2000 fletwood discovery with the 300 cummins gets hot when going up hills then cools down on leavel ground.Started doing this after they fixxed dash air also runs hotter than it did before they fixxed the air.Dont know what it will do in mountains yet but going to soon any advise would help.Turn the air off and that dont help.

Thanks
__________________

__________________
dirttracker0 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 09-15-2010, 11:46 PM   #2
Senior Member
 
Join Date: May 2009
Posts: 258
The first thing to check would be the rad. Some 300 chasisis had a slobber tube that would allow the fan to spray oil into the charge air cooler (and the rad), the oil would cause any dust blown through to stick and eventually you've got a rad operating at reduced efficiency. You can search the issue and get lots of hits on what to do. I tried the simple green method sprayed in from the engine side with the motor running to distribute it around the rad. I'll know soon how well it worked but visually it looks a lot better than it did. Good luck.
__________________

__________________
srydve is offline   Reply With Quote
Old 09-15-2010, 11:53 PM   #3
Junior Member
 
Join Date: Sep 2010
Posts: 26
look on the caterpillar forum for 3126 overheating (notorious)
__________________
atomic98 is offline   Reply With Quote
Old 09-19-2010, 04:07 PM   #4
Senior Member
 
Join Date: Jun 2009
Posts: 799
Quote:
Originally Posted by atomic98 View Post
look on the caterpillar forum for 3126 overheating (notorious)
He as a Cummings. Not a cat.
__________________
ninos is offline   Reply With Quote
Old 09-19-2010, 04:44 PM   #5
Senior Member
 
bob109's Avatar
 
Join Date: Sep 2010
Posts: 344
Quote:
Originally Posted by ninos View Post
He as a Cummings. Not a cat.
In the case of a 2000 Discovery the engine make, makes no difference. What matters is the radiator location, and this DP has a rear radiator! If the 300 Cummins has a breather tube and it's not extended it will contaminate the radiator just like a Cat. The solution is to bring the slobber/breather tube aft of the fan and fan shroud Once that is done the method of cleaning a rear radiator is the same whether the MH is Cat or Cummins powered.
__________________
bob
2001.5 Fleetwood Discovery 37U 330HP Cat
Toad-2008 Yamaha Royal Star Tour Delux
bob109 is offline   Reply With Quote
Old 09-20-2010, 03:53 PM   #6
Junior Member
 
Join Date: Sep 2010
Posts: 16
barring it being gummed up..an easy way to check the rad for clogging is to let the engine run up to temp so that the thermostat ( another thing you might want to check ) opens. shut the engine OFF and run your hand up and down the cooling grid. it should be warm or hot all the way up and down. if you encounter a cold spot that part of the rad is clogged. also ( i am not familiar with MHs) do you have a separate tranny cooler? if not a lot of tranny collers run through the rads and that makes them heat up more. lastly you might try a different rad fan. BUT if you say this happened only after "they" worked on the dash air...i would check the rad and then take it back to "them".
__________________
dalek_56 is offline   Reply With Quote
Old 09-21-2010, 07:11 PM   #7
Junior Member
 
Join Date: Sep 2010
Posts: 27
overheating

Cleaned radiator and extended tube will let u know soon how that helped plan on going to maryland from missouri this sunday.Thanks for all the advise first trip in motorhome new to all this but ready for the experience.
__________________

__________________
dirttracker0 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
Cummins Produces 26,000th EPA 2010 Engine DriVer RV Industry Press 0 08-24-2010 12:23 PM
ISC 330 Cummins - Have I got a problem? Gordon Monaco Owner's Forum 5 12-25-2009 01:03 PM
frig problem with Southwind 36D lp5151 Fleetwood Products Owner's Forum 9 10-13-2009 06:33 PM
Itasca Overheating problem Buster661 Winnebago Industries Owner's Forum 13 06-08-2008 09:52 PM
Cummins unveils '07 engine lineup Tom N Class A Motorhome Discussions 8 03-01-2006 05:10 PM

» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 11:41 AM.


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