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.
  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 06-16-2016, 07:28 AM   #1
Senior Member
HR2004's Avatar
Join Date: May 2014
Posts: 472
Radiator caps

When we got home from spending the winter in Arizona I got backed in beside our house and when I went to the back of the motorhome, outside, I got a wiff of antifreeze.. In a couple of minutes it was gone.. Later after doing some reading on here I checked the radiator cap. the seal was cracked so I went to the auto parts store and got a new Stant 16lb cap.. The next week I had to take the coach for vehicle inspection. When I got home, same thing happened. Today I tested the new cap and it was 6lbs. not nearly enough.. I will take it back today and have the new one tested before I leave the store.. Something to keep in mind if your needing a new cap..

2004 Holiday Rambler DST
Jefferson City, Missouri
Navy vet 67/71 Tonkin Gulf Yacht Club
HR2004 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 06-16-2016, 09:55 AM   #2
Senior Member
Skip426's Avatar

Join Date: Apr 2011
Location: Powell River, B.C.
Posts: 15,635
YES! Just because a part is new , doesn't mean it's good .
Unfortunately the same can be said for non-returnable electrical parts.

99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.
Skip426 is offline   Reply With Quote
Old 06-16-2016, 11:29 PM   #3
"Formerly Diplomat Don"
Dutch Star Don's Avatar
Newmar Owners Club
Join Date: Apr 2005
Location: Moorpark, Ca.
Posts: 10,122
Not to be the bearer of bad news, but it may not be your cap. Your model coach has had issues with cracking the radiator and causing the wiffs of antifreeze. Monaco rigidly mounted the radiator with the charge air cooler atop it. This caused he radiator to eventually crack. I smelled coolant for almost two years on my Diplomat and just could never find the leak. Finally, I located it. They often start leaking in the upper left or right corner of the radiator. Since it's at the top, it doesn't just run out. These coaches don't make a lot of pressure (cap) so they don't force a lot of coolant out when there is a leak.

Check your radiator carefully. Back when mine went bad, I lucked out and was able to buy a brand new one from a surplus company that bought a lot of Monaco stock when they went out of business. The newer version was an inch shorter and had rubber spacers between the radiator and CAC, eliminating some of the rigid mounting.
Don & Mary
2014 Newmar Dutch Star - All Electric - 450 ISL
2016 GMC Canyon 4WD Crew Cab
Dutch Star Don 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
Radiator Pressure Caps William Willard Cummins Engines 16 01-18-2013 08:43 PM
Change Rear Radiator to Side Radiator William Willard Monaco Owner's Forum 32 06-19-2012 05:24 AM
Side radiator vs. rear radiator 2InAlabama Class A Motorhome Discussions 14 01-10-2012 10:22 AM
Gas Caps Leaking JavaJelly Newmar Owner's Forum 16 03-09-2007 04:18 AM
Tire Pressure Monitoring Caps C Driver Gear and Product Discussions 10 12-22-2005 07:37 PM

» Featured Campgrounds

Reviews provided by

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 06:39 AM.

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