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.
  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 09-17-2016, 11:22 PM   #1
Join Date: Jul 2013
Posts: 78
Coolant Filter

Traveling west on I40 approaching Albuquerque i noticed the engine temp start going up on the hills. It never got above 200 and would cool back to normal after the crest. It has always stayed at 180. As we climbed up to flagstaff it was running 205 and only cooling to 200. I stopped at a rest area, let it cool off some then checked the water and oil and they were normal. Climbed under and checked the radiator with a flashlight and as best i could tell it looked good also. We made it to Camp Verde ok and are in a nice RV Park,not a place where i can do any work. I'm thinking the coolant filter may be the problem. I drove the jeep to Phoenix and picked up 2 new filters and installed one of them. Have quite a climb back to flagstaff Monday. I know that a lot of you think that not too bad but this is not typical of my coach. What do you think?

2001 40' Diplomat
330 ISC
Towing 2015 Jeep wrangler

Eddie and Carol
2008 Monoco Diplomat SKQ
Buford, Ga.
eddie g 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 09-17-2016, 11:36 PM   #2
Senior Member
dnystrom's Avatar
Winnebago Owners Club
Join Date: Jan 2014
Posts: 534
Time to clean and flush the radiator. Ive had the coolant filters on for 35 years and not had a problem with overheating as a direct cause. You have a thermostat or a radiator problem in my opinion. Try cleaning then a flush. You have some time on that cooling system. The filters or filter is on the low pressure side of the system and should not be a big factor with the cooling unless its plugged

07 Meridian 34H 350 Cat
2010 Subaru Forester Tow
Home Port is Kingman,Az
KA7UYZ NRA Endowment Member Retired Fire Service
dnystrom is offline   Reply With Quote
Old 09-17-2016, 11:44 PM   #3
Senior Member
dennis45's Avatar

Join Date: Jun 2012
Location: BC
Posts: 7,348
The coolant filter will have zero effect on your overheating problem. This filter sees only a small slipstream of coolant. It could be plugged and have no effect in this regard.
As stated above you need to have the radiator cleaned to provide better air flow.
Could also be a thermostat problem.
Have a sample of the coolant tested before replacing it.
Dennis & Carol
Said so long to our DS for a 2019 Unity LTV CB, pushed by a 2013 Honda CRV, BlueOx Baseplate, Aventa Bar & Patriot Brake
dennis45 is online now   Reply With Quote
Old 09-18-2016, 09:08 AM   #4
Senior Member
jacwjames's Avatar
Monaco Owners Club
Join Date: Jun 2014
Posts: 5,003
Not familiar with fan/radiator system other then I know you have a rear radiator system. The most common problem with this type of system is a dirty radiator.

For your cooling efficiency to go down much that quickly is odd. What was your transmission temp doing. We went to Alburqurque last year and as we were driving in stop and go traffic climbing hills my transmission temp climbed quickly, before I noticed. I have a silverleaf system that gives accurate real time info. As soon as I downshifted to increase the temps started to go down.

The radiator is hard to clean due to the way it is mounted and stacked with other components (Transmission, CAC & Condensor). I've also read that debris gets stuck between components making it even harder to cleaan. Do some research on how to clean.
Jim J
2002 Monaco Windsor 38 PKD
2005 Jeep Grand Cherokee w/5.7 Hemi
jacwjames is online now   Reply With Quote
Old 09-18-2016, 12:23 PM   #5
Senior Member
YC1's Avatar

Holiday Rambler Owners Club
Join Date: Jun 2011
Posts: 6,771
Those temps are fine but not normal for you. I would change the thermostat but put the old one and new one in hot water and bring them close to a boil. See if the old one is a bit slower.

For some reason folks seem reluctant to change a thermostat. They do not last forever.
Myron & Deborah
08 HR Endeavor 40 SKQ
2012 Ford Edge Limited FWD 3.5L
Aluminator tow bar, Demco base plate
YC1 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

Similar Threads
Thread Thread Starter Forum Replies Last Post
Coolant surge tank blowing coolant out over flow svpassion2 Monaco Owner's Forum 18 06-14-2016 06:33 PM
Coolant Leak or Coolant Drip? TXBart Entegra Owner's Forum 87 05-15-2015 01:26 PM
New coolant, coolant filter?? smlranger Cummins Engines 11 04-18-2014 08:01 AM
Coolant filter DCA Andy M Cummins Engines 17 01-22-2009 04:31 PM
Coolant filter location on 2004 Holiday Rambler Ambassador 38PDQ Letsgoagain Monaco Owner's Forum 6 04-26-2007 05:32 PM

» Featured Campgrounds

Reviews provided by

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 02:42 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.