Journey with Confidence RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Take a Speed Test Free 7 Day Trial ×
RV Trip Planning Discussions

Go Back   iRV2 Forums > THE CHASSIS CLUB FORUMS > Ford Motorhome Chassis Forum
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 12-01-2013, 04:47 PM   #15
Senior Member
 
Ford Super Duty Owner
Join Date: Jan 2011
Location: Kitts Hill, OH
Posts: 2,239
Quote:
Originally Posted by Belgique View Post
....... I don't think the fan was kicking in because it was too quiet! Dry weather...no rain. Just checked and I have not changed coolant (about 37K miles) but the manual says 100K. The Thermostat is probably worth a change. Is that a DIY thing?
So you think it's the fan so your going for the Thermostat??

I also think you take the engine temp with a infared gun before jumping to the checkbook to get your parts. REad more on here
Quote:
Originally Posted by jamesrxx951 View Post
........ If the gauge was showing hot but you did not hear the cooling fan engage, ...... It may also be necessary to measure the actual engine temp with an IR gun close to the cylinder head temp sensor and compare that reading to what the scan tool is reading the actual temp at. ...... but it may also be the sensor failing when it reaches that specific temp range. Have seen a few CHT's fail in the past on other vehicles.
I'd really see how hot it is (with the infrared gun)before jumping to parts changing.
I would suspect the Fan clutch before the thermostat.
__________________
(RVM#26) THE U-RV 94 F-700/24 foot U-haul box home built RV
Mekanic 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 12-01-2013, 05:04 PM   #16
Registered User
 
Join Date: Mar 2013
Posts: 1,919
Quote:
Originally Posted by Mekanic View Post
So you think it's the fan so your going for the Thermostat??

I also think you take the engine temp with a infared gun before jumping to the checkbook to get your parts. REad more on here


I'd really see how hot it is (with the infrared gun)before jumping to parts changing.
I would suspect the Fan clutch before the thermostat.

I did not recommend any parts changing. Just possible causes but explained a quick diag path to determine what direction to proceed with. You need to have an overheating radiator to get the cooling fan to engage. These are not electric or electromechanical cooling fans that are PCM controlled. They need the heat from the center of the radiator blowing onto the hub directly to engage the clutch. The engine can be melting down and the radiator is cool and the fan will never engage fully.
jamesrxx951 is offline   Reply With Quote
Old 12-01-2013, 08:09 PM   #17
Senior Member
 
Belgique's Avatar
 
Fleetwood Owners Club
Freightliner Owners Club
Join Date: Jan 2006
Location: Hickory, NC
Posts: 870
Thanks Mekanic and James. I'm not skilled at this stuff so the only thing I was even contemplating was a thermostat since they are cheap and if it was easy. I'm a leave it to the pros kind of guy. I just had a Jeep problem where it would not throw a code and the garage could notmake it happen there. Finally we got a code and they fixed it. My goal is to gather info so the garage can fix it without having to drive us and the animals up and down hills. Success would be if we can make it happen and report what we find and they fix it while we wait.

Sincerely appreciate your counsel.
__________________
Hickory, NC. 2007 Fleetwood Discovery 40X
Belgique is offline   Reply With Quote
Old 12-03-2013, 11:55 AM   #18
Senior Member
 
Ford Super Duty Owner
Join Date: Aug 2007
Location: Salt Lake
Posts: 101
You may want to go here and read what the TSB says: 06-21-15***MIL ON - DTC P1285 / P1299 - 5.4L 3V / 6.8L 3V - FALSE OVERHEAT
I had the same problem with mine at 22000 miles. Had this procedure done and not a problem since. Alvin
__________________
2007 National Surf Side 29A
2011 HHR Toad
Pressure Pro Safe T Plus
onecb is offline   Reply With Quote
Old 12-03-2013, 02:29 PM   #19
Registered User
 
Join Date: Mar 2013
Posts: 1,919
Quote:
Originally Posted by onecb View Post
You may want to go here and read what the TSB says: 06-21-15***MIL ON - DTC P1285 / P1299 - 5.4L 3V / 6.8L 3V - FALSE OVERHEAT
I had the same problem with mine at 22000 miles. Had this procedure done and not a problem since. Alvin

He said his motorhome was a 2008 model. However it would possible apply if his chassis is an 07 on an 08 build coach.
jamesrxx951 is offline   Reply With Quote
Old 12-08-2013, 01:18 PM   #20
Member
 
Join Date: Jun 2011
Posts: 86
If you did not have the sound of an airplane preparing for take off from under the hood you need to check the operation of the fan clutch.
Tiny Dog is offline   Reply With Quote
Old 12-08-2013, 02:07 PM   #21
Senior Member
 
Belgique's Avatar
 
Fleetwood Owners Club
Freightliner Owners Club
Join Date: Jan 2006
Location: Hickory, NC
Posts: 870
I didn't and that's what I'm guessing. The fan works at idle speeds, I can feel the flow. On the interstate it didn't do that roar. I have a garage appointment Tue. I'll report back for the benefit of folks after me. Thanks!
__________________
Hickory, NC. 2007 Fleetwood Discovery 40X
Belgique is offline   Reply With Quote
Old 12-08-2013, 02:17 PM   #22
Registered User
 
Join Date: Mar 2013
Posts: 1,919
Quote:
Originally Posted by Tiny Dog View Post
If you did not have the sound of an airplane preparing for take off from under the hood you need to check the operation of the fan clutch.

After it has been verified that the engine is truly overheating and the radiator is not plugged directly in front of the fan clutch.
jamesrxx951 is offline   Reply With Quote
Old 12-08-2013, 11:39 PM   #23
Senior Member
 
chboone's Avatar


 
National RV Owners Club
Ford Super Duty Owner
Join Date: Sep 2010
Location: Horse Town USA, CA.
Posts: 3,662
Listen to what James is suggesting, he's a Master Mechanic at a Ford dealer. Verify the actual engine temperature before starting to change parts. The V10 is not known for having overheating problems. Have you used a very bright flashlight to verify the radiator is clean, especially between the AC condenser and the radiator. You may need to lock up the four legged kids in the bathroom or bedroom while the dog house is open.

Chuck
__________________
1999 35 ft. Dolphin 5350, F53, Banks System, 5 Stars Tune, Air Lift Air Bags, Koni Shocks, Blue OX TruCenter, TigerTrak track bars F&R, Roadmaster 1-3/4" rear auxiliary sway bar, 2004 F450 Lariat Pickup 6.0 Diesel Crew Cab DRW, 4X4, GVWR 15,000, Front GAWR 6,000, Rear GAWR 11,000, GCWR 26,000,1994 36ft Avion 5er, GVWR 13,700, 2,740 Pin Weight.
chboone is offline   Reply With Quote
Old 12-09-2013, 06:31 AM   #24
Senior Member
 
Belgique's Avatar
 
Fleetwood Owners Club
Freightliner Owners Club
Join Date: Jan 2006
Location: Hickory, NC
Posts: 870
Folks! I recognized my inadequacies on engines at about the second post and found a trusted garage where we are now. I have an 0800 appointment to fix it tomorrow (Tue). No way could I even begin to diagnose what's going on or fix it if I did. You kind folks helped me confirm that I wasn't missing anything obvious. I'll report the results ASAP.

And yep, dogs and cats have been warned that they will be imprisoned.
__________________
Hickory, NC. 2007 Fleetwood Discovery 40X
Belgique is offline   Reply With Quote
Old 12-09-2013, 08:34 AM   #25
Registered User
 
Join Date: Mar 2013
Posts: 1,919
Quote:
Originally Posted by Belgique View Post
Folks! I recognized my inadequacies on engines at about the second post and found a trusted garage where we are now. I have an 0800 appointment to fix it tomorrow (Tue). No way could I even begin to diagnose what's going on or fix it if I did. You kind folks helped me confirm that I wasn't missing anything obvious. I'll report the results ASAP.

And yep, dogs and cats have been warned that they will be imprisoned.

Check the build date on the chassis also (not the coach). That TSB that was talked about above may be what you need.
jamesrxx951 is offline   Reply With Quote
Old 12-09-2013, 05:47 PM   #26
Senior Member
 
Belgique's Avatar
 
Fleetwood Owners Club
Freightliner Owners Club
Join Date: Jan 2006
Location: Hickory, NC
Posts: 870
I checked the VIN and mine is an 07 build. I'll mention this to the shop tomorrow. The TSB says it throws a code...mine has not so maybe it is not but worth mentioning to the folks. Thanks.
__________________
Hickory, NC. 2007 Fleetwood Discovery 40X
Belgique is offline   Reply With Quote
Old 12-09-2013, 05:53 PM   #27
Senior Member
 
toneumanns's Avatar
 
Join Date: Jul 2011
Posts: 792
Quote:
Originally Posted by Tiny Dog View Post
If you did not have the sound of an airplane preparing for take off from under the hood you need to check the operation of the fan clutch.
That is the truth. Mine has only engaged 2 times but when it did there was no mistaken it. First time I thought we were preparing for take off. Must move a tremendous amount of air.
__________________
2011 Itasca Suncruiser, Jeep Grand Cherokee toad
MSgt retired USAF 1988, AA retired 2005
toneumanns is offline   Reply With Quote
Old 12-09-2013, 06:00 PM   #28
Registered User
 
Join Date: Mar 2013
Posts: 1,919
Quote:
Originally Posted by Belgique View Post
I checked the VIN and mine is an 07 build. I'll mention this to the shop tomorrow. The TSB says it throws a code...mine has not so maybe it is not but worth mentioning to the folks. Thanks.

You have to remember the PCM will not set a DTC unless the over heat threshold is reached. I believe it is around 275F. Don't remember the exact number. However if it was caught prior to the set point, no DTC will be set. I was going up a steep grade with my V10 Class A, 1st gear, WOT, and 2nd gear WOT, my engine coolant temp never went over 205. So it was working hard and the fan never was heard.
jamesrxx951 is offline   Reply With Quote
Reply

Tags
v10



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


All times are GMT -6. The time now is 07:43 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2023, vBulletin Solutions, Inc.