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 12-28-2015, 08:25 PM   #1
Join Date: Jun 2015
Posts: 53
1996 Itasca Sunrise F53 Super Duty

Hello All and Happy Holidays,

I'm not sure where to go with this but I'll start here. Maybe this is just a word of caution but I purchased a 1996 Itasca Sunrise just over a year ago that supposedly didn't need anything major. I apparently had "sucker' written on my forehead and we are now way past "buyer beware". I won't go into the laundry list of things that I've done so far but I did find something last week that totally caught me by surprise. While winterizing the "Magic Carpet Ride" last weekend, I pulled the insulation away from the hot water heater access under the kitchen sink for access to the bypass value. With the insulation removed I noticed a bulge in one of the engine heat exchanger hoses. I drained the engine coolant at the radiator and removed the hose from hot water heater. The hose appeared to be original and the bulge in the hose was caused by corrosion at the fitting. After removing the hose I found the aluminum fitting on water tank badly eaten away from corrosion. The hose would have blown soon and the thought of having this hose blow inside the RV spewing hot engine anti-freeze everyone is just scary.

I had enough of the original fitting left to install and clamp the new replacement hose and salvage what could have been a very bad situation. This prompted me to replace all the heater hoses at the hot water engine engine heat exchanger and at the rear auxiliary heater. What I don't know is what caused the fitting corrosion. What I do know is that the previous owner tried to stop a radiator leak on the OEM radiator using stop leak. I replaced the radiator, earlier this year and while I had the front end off I also replaced the water pump, thermostat and hoses.

Now I can get to the point.

When I went to replaced the thermostat I found the upper radiator hose bulging badly at the thermostat housing. When I pulled the thermostat housing the housing was so badly corroded that I had to replace it. The upper radiator hose at the bulging area was full of corrosive crap and would have blown soon. The fitting and hose at the water heater engine heat exchange was identical. I don't know if it was the stop leak, bad anti-freeze or actual electrolysis but DON'T forget to check the hoses at the hot water heater engine heat exchanger and the rear heater as part of your annual routine maintenance. I got lucky and found the problem before it failed but it could have just as easily been worse.

Best wishes to all for a fantastic 2016!


FrankenHome 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 12-29-2015, 02:10 AM   #2
Community Moderator
RV Wizard's Avatar

Country Coach Owners Club
Appalachian Campers
Gulf Streamers Club
Join Date: Mar 2000
Location: Chattanooga, Tn.
Posts: 12,062
Thanks John for the heads up. I would suspect the culprit to be additive put into the radiator causing the issue of corrosion.

Mike, RVIA & RVSA Certified Master RV Technician
Amy, Dr. Assistant - Roxie & Mei Ling, four legs each
2000 Gulf Stream Scenic Cruiser 450 hp & 1330# torque
06 Saturn Vue, 06 Chevy Z71 4x4 & 2014 Corvette Z51 M7
RV Wizard is offline   Reply With Quote
Old 12-29-2015, 04:24 AM   #3
Senior Member
slowmachine's Avatar
Nor'easters Club
Freightliner Owners Club
Holiday Rambler Owners Club
Join Date: Dec 2014
Location: Alton, NH
Posts: 1,258
This is a common problem with 1980s VW vans. In the VWs, the cause is galvanic corrosion of dissimilar metals. It is mostly fixed by ensuring that the engine and transmission are adequately grounded to the chassis in locations that minimize current flow through the affected parts. Using the proper coolant and changing it at the right intervals is essential. I can't even guess where the engine-to-chassis grounds are supposed to be in this complex system, but I would be searching for them on the wire diagram and checking the installation for their presence and clean connections.

2000 Holiday Rambler Endeavor 40PBD
Freghtliner XC, CAT 3126B
2000 Holiday Rambler Endeavor 40PBD
Freightliner XC, CAT 3126B
slowmachine is offline   Reply With Quote

f53, itasca

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
What did you do to your old RV today? falconbro Vintage RV's 3901 Today 07:54 PM
1996 Itasca Sunrise F53 Super Duty Update FrankenHome Class A Motorhome Discussions 2 08-18-2015 08:46 PM
2016 Ford Super Duty, get it while it's hot! sknight Just Conversation 5 08-04-2014 04:21 PM
"Vanes" on the front of an Itasca Sunrise BobnMelba Winnebago Industries Owner's Forum 12 02-09-2014 01:18 PM
Class C Diesel Motorhomes, New 35SK Super C RV Unveiled by Thor Motor Coach DriVer RV Industry Press 1 09-05-2013 12:20 PM

» Featured Campgrounds

Reviews provided by

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 09:11 PM.

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