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.
  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 07-08-2013, 02:32 PM   #1
Junior Member
Join Date: Jul 2013
Posts: 3
2001 Holiday Rambler Endeavor

My 2001 40 foot Diesel pusher over heats on long hill climbs. Does Someone have an idea on how to fix the problem?

Namaque 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 07-08-2013, 03:29 PM   #2
Senior Member
ronspradley's Avatar

Gulf Streamers Club
Join Date: Mar 2011
Location: Central Texas
Posts: 1,838
Welcome to the forum. On my setup, I have a rear radiator and it was clogged from the motor side by gunk coming from the slobber tube, comes from the vent out of the valve cover. To fix I re-routed the tube so that the gunk no longer collects on the radiator fins. And of course I cleaned the fins of the radiator. I also downshift the tranny to keep the RPM's up to keep the radiator fan spinning fast enough. Others here have more experience and can add to my suggestions. Best of luck.


1995 Monaco Windsor DP 32'
1993 Gulfstream Sun Voyager DP 30'
Toad 1998 Honda CRV, 2006 Honda CRV
Life's too short to drink cheap beer.
ronspradley is offline   Reply With Quote
Old 07-08-2013, 03:34 PM   #3
Community Administrator
JohnRR's Avatar

Fleetwood Owners Club
Workhorse Chassis Owner
Join Date: Sep 2010
Location: Marquette, Michigan "Da UP"
Posts: 17,188
John & Cathy R.
06 Pace Arrow 38L W24
08 14 Lincoln MKX AWD
See My RV Upgrades
JohnRR is offline   Reply With Quote
Old 07-08-2013, 03:54 PM   #4
Senior Member
Dmorgan6375's Avatar
Join Date: May 2013
Location: Unionville, Tenn.
Posts: 3,677
Like Ron had posted make sure there is a clean flow of air to the radiator, now if that is not the problem, maybe its the way you're driving the rig. Never ever lug on it, (Low RPM)you want to keep it at a good amount of rpm's right at thee power level but not much as to keeping it near the red line(Max) This is just MOHO here. Good Luck! Check coolant level as well!
Douglas M. Morgan RVM96
04 Dolphin 6375 LX W-24 Chassis #434136
"The Journey is our Destination" Unionville, Tn.
Dmorgan6375 is offline   Reply With Quote
Old 07-08-2013, 04:11 PM   #5
Senior Member
Melmoses's Avatar
Tiffin Owners Club
Join Date: Aug 2010
Location: Montgomery, AL
Posts: 1,197
A lot of times overheating is due to a dirty radiator as the others have said. To clean it use Simple Green Extreme which won't hurt aluminum. Spray it on with a garden sprayer and let it soak a while. You need to spray both sides of the radiator for the best result. Then rinse well with water - not too much pressure because those fins will bend way too easy. Start your engine and let it blow through the radiator. Rinse again as needed until you get no more bubbles coming through. I do mine once a year unless I have traveled a lot of dirt roads, then I will clean it as needed. My coach has access to the backside of the radiator through a door in the bedroom floor so I can clean both the CAC and the radiator. Don't know about your access but it should have a way to get back there.
Mel (Melanie) and Harry
2009 Tiffin Phaeton 40QTH
2014 Jeep Wrangler Sport
Melmoses is offline   Reply With Quote
Old 07-08-2013, 04:31 PM   #6
Senior Member
Playtime III's Avatar
Holiday Rambler Owners Club
Join Date: Oct 2012
Location: Tampa FL
Posts: 657
What are you using to define overheating? My dash temp gauges are very inaccurate so I go off my data from my Alladin Jr.

How are you driving your DP? Lower gear and higher RPM are better for cooling our rigs due to their design (turbo, fans, etc.). Driving to save fuel works opposite for maintaining engine performance.
2006 HR Scepter 42DSQ
Playtime IV
Holiday FL
Playtime III is offline   Reply With Quote
Old 07-08-2013, 05:43 PM   #7
Junior Member
hhansen59's Avatar
Monaco Owners Club
Join Date: May 2011
Posts: 17

I have a 2000 Endeavor and experienced same issue. First, the advice you already received concerning the Simple Green is a must to do. I didn't know about the problem and ended up paying a truck repair 2 hours of labor to do the exact same thing. I watched and the junk that came out was scary. You can do it yourself, it just takes a while and you will get messy. Decide whether you want to pay a couple hundred bucks or do it your self. Second, extend the slobber tube at the bottom of the engine about 6". Just get a section of the same size rubber hose and find a connector and a couple of clamps. This will stop the engine from clogging up your radiator and everything in the rear. Third, on long slow climbing grades you are probably driving in 6th gear and don't really notice the engine in working really hard as it will maintain speed. The problem is that you need to down shift to 5th and maybe even 4th depending on the grade. The engine will run faster which is not a bad thing as the fan and water pump are flowing much more coolant through the system. I didn't down shift until a wiser person explained it to me and I would overheat the engine causing the gauge and the warning light to go off scaring everyone onboard. Slow down if you have to but don't lug or overload the engine as more RPMs means more cooling capacity.
hhansen59 is offline   Reply With Quote
Old 07-24-2013, 07:03 AM   #8
Junior Member
HRDavid's Avatar
Join Date: Jul 2013
Posts: 6
Just got back from the rockies and my 01 38' endeavor did it to, even downshifting had to keep an eye on it. Also my "Warning" light would come on which I guessed to be exhaust temp from the way it acted, slow down a little and it would go off.
HRDavid is offline   Reply With Quote
Old 07-29-2013, 11:43 AM   #9
Junior Member
Join Date: Jul 2013
Posts: 3
I cleaned the rad with Zep degreaser it worked real well lots of crud came out. extended the oil breather tube. We drove from Lubbock TX to Phoenix AZ stayed cool all the way. Thanks for all the info. PS down shifted on the long hills.
Namaque is offline   Reply With Quote
Old 07-30-2013, 08:18 AM   #10
Junior Member
HRDavid's Avatar
Join Date: Jul 2013
Posts: 6
Cleaned mine this weekend and extended slobber tube out the back.

David and Sue
HR 01 Endeavor 38BPD
72 Bronco Pickup
HRDavid is offline   Reply With Quote

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

» Featured Campgrounds

Reviews provided by

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 02:17 AM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.