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Old 05-07-2008, 09:19 PM   #1
Winnie-Wise
 
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Hi all. I'm back again looking for advice.

I have a 2007 Itasca Suncruiser with a 2006 F-53 V-10 chassis. It has 22,200 mi. Today I was driving along and everything was alright. I pulled over and stopped for awhile to rest.

After about 30 minutes I got on the road again. Everything was going ok for about 20 minutes when the check gauge warning light came on. I looked at my scangage and water temp was at 245. I immediately pulled over and checked under the hood. Everything was normal, coolant was at the right level and there was no boiling or smoke.

I waited about 5 minutes and continued. Water temp fluctuated between 238 and 210 until I got home. In all 22,000 mi. water temp had never gone over 212.

I have a couple of questions. This happened after a full service oil change.

1-What is the max temperature you should drive at?
2-Could this be the radiator thermostat?
3-If it is how can you check it?
4-Is it easy to DIY?
5-What else could it be?

My mechanical skills are not the best and my warranty expired.
I tried to do a search but mainly found problems with diesel overheating.

Thanks for your help.
Tom
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2010 Jeep Rubicon offroad Toad
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Old 05-07-2008, 09:19 PM   #2
Winnie-Wise
 
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Hi all. I'm back again looking for advice.

I have a 2007 Itasca Suncruiser with a 2006 F-53 V-10 chassis. It has 22,200 mi. Today I was driving along and everything was alright. I pulled over and stopped for awhile to rest.

After about 30 minutes I got on the road again. Everything was going ok for about 20 minutes when the check gauge warning light came on. I looked at my scangage and water temp was at 245. I immediately pulled over and checked under the hood. Everything was normal, coolant was at the right level and there was no boiling or smoke.

I waited about 5 minutes and continued. Water temp fluctuated between 238 and 210 until I got home. In all 22,000 mi. water temp had never gone over 212.

I have a couple of questions. This happened after a full service oil change.

1-What is the max temperature you should drive at?
2-Could this be the radiator thermostat?
3-If it is how can you check it?
4-Is it easy to DIY?
5-What else could it be?

My mechanical skills are not the best and my warranty expired.
I tried to do a search but mainly found problems with diesel overheating.

Thanks for your help.
Tom
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2007 Itasca Suncruiser 33V
2009 Ford Flex Ltd. AWD Fa. Toad
2010 Jeep Rubicon offroad Toad
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Old 05-08-2008, 12:14 AM   #3
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You have a 3 year warranty on your Ford chassis.
I had an overheat situation last year at 9000 miles on the odometer. Fiord towed it to a dealership and they replaced the thermostat.The mechanic has done a couple. I normally run between 195-215 degrees.It will go into limp mode after 250 degrees. Did you check your scan guage for any fault codes?
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Old 05-08-2008, 07:32 AM   #4
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Duh, thanks Frankie, I forgot to check the codes last night I was so disapointed with this happening.
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Old 05-08-2008, 08:54 PM   #5
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I took the MH to Ford today and the temp shot up to 245F without any physical signs of overheating. A board member answered my thread in the FORD section. His name is AUTO and he really helped me with this TSB.

I'm going to post a thread in case it might be of help.

TSB
06-21-15 MIL ON - DTC P1285 / P1299 - 5.4L 3V / 6.8L 3V - FALSE OVERHEAT

Publication Date: October 13, 2006

FORD: 2005-2007 F-53 Motorhome Chassis, F-Super Duty



ISSUE:
Some 2005-2007 F-Super Duty and F-53 Motorhome chassis vehicles equipped with a 5.4L or 6.8L 3-valve engine may exhibit an engine temperature gauge indicating an overheating condition with the malfunction indicator lamp (MIL) on with diagnostic trouble codes (DTCs) P1285 and P1299.

ACTION:
Performing normal engine cooling system diagnostics in Workshop Manual, Section 303-03, if it is determined that the engine is not physically overheating (coolant expulsion), install a new thermostat and crossover pipe. They have been revised for improved cooling system flow characteristics.


PART NUMBER PART NAME
7L3Z-8575-A Thermostat - 5.4L
7C3Z-8575-A Thermostat - 6.8L
3L3Z-8C368-A Crossover Pipe - 5.4L
3L3Z-8C368-B Crossover Pipe - 6.8L


WARRANTY STATUS:
Eligible Under Provisions Of New Vehicle Limited Warranty Coverage
Note: Normal would be from 190 to about 220. The actual boiling point of the system is about 262. 212 water+5 for coolant +15x3 for cap pressure =262.
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Old 05-09-2008, 02:50 AM   #6
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Duplicate Post.

Please follow other thread HERE.

Thanks
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