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05-01-2020, 12:13 PM
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#1
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Senior Member
Join Date: Aug 2010
Posts: 465
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Temp Gauge
2017 Ventana Le 4037
Freightliner XC 360 HP chassis. Temperature Gauge.
Outside temperature at 60 degrees I noticed while driving at highway speeds 65mph and NOT climbing any grades other than the typical 2 percent, which is a normal change in grades on the interstate. The temperature gauge would fluctuate as high as just below ¾ hot to a little more than a quarter gauge in a few minutes. Is this normal? I checked the coolant level everything is ok.
Does this chassis use a two-speed fan clutch? I am concern about what will happen if the temperature outside is in the 80,s.
I called Freightliner and was advised this normal. I question that.
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05-01-2020, 06:06 PM
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#2
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Senior Member
Join Date: Apr 2011
Location: Powell River, B.C.
Posts: 31,486
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Quote:
Originally Posted by Robert T
2017 Ventana Le 4037
Freightliner XC 360 HP chassis. Temperature Gauge.
I called Freightliner and was advised this normal. I question that.
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DON'T; this is normal given the ambient temp, the coolant going into the engine, from the radiator @ thermostat opening , at 60 degrees ambient , is way cooler that it would be at 90+ , so your gauge swing @ 60 will be more than it would be at 90 , but the smaller swing at 90 will be more frequent . 
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99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.
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05-02-2020, 09:01 AM
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#3
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Senior Member
Fleetwood Owners Club Freightliner Owners Club
Join Date: Feb 2012
Location: Central Arkansas
Posts: 1,378
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Yep. Believe Freighliner. Fan turns on around 210 and off at around 190.
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2008 Fleetwood Bounder 38S 2022 Grand Cherokee WK Limited 2021 Polaris Slingshot R Limited
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05-02-2020, 05:20 PM
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#4
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Senior Member
Join Date: Jan 2018
Location: Sacramento CA.
Posts: 536
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I drove the over the sierra nevada mountains two days ago on I80 many grades above 2 percent temp was around 70 deg gage never reached the center line stayed in lower half of normal range.
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2005 Itasca meridian
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05-09-2020, 06:12 PM
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#5
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Senior Member
Join Date: Jul 2009
Posts: 1,979
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Quote:
Originally Posted by cataska
I drove the over the sierra nevada mountains two days ago on I80 many grades above 2 percent temp was around 70 deg gage never reached the center line stayed in lower half of normal range.
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Different engine and fan combo. OP has a Cummins with a Horton clutch. I'm guessing that you have a C7 with a fixed fan.
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ernieh
2019 Phaeton 37BH
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05-09-2020, 07:01 PM
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#6
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Senior Member
Freightliner Owners Club
Join Date: Apr 2004
Location: Show Low Az
Posts: 1,325
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Call Freightliner 24/7 Hotline
__________________
Dale&Susan, 08 Alfa Gold, DaGirlsRv Blog
2015 F-150XLT_2000W Solar_800 AmpHr Lithium
Magnum_MSH 3012 & PT100 
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05-10-2020, 07:12 AM
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#7
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Senior Member
Fleetwood Owners Club Freightliner Owners Club
Join Date: Feb 2012
Location: Central Arkansas
Posts: 1,378
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Quote:
Originally Posted by gatorcq
Call Freightliner 24/7 Hotline
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Sometimes I wonder if folks even read before responding. 
The OP does mention he has conversed with FL...but didn't believe them. 
__________________
2008 Fleetwood Bounder 38S 2022 Grand Cherokee WK Limited 2021 Polaris Slingshot R Limited
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05-10-2020, 11:51 AM
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#8
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Senior Member
Freightliner Owners Club
Join Date: Apr 2004
Location: Show Low Az
Posts: 1,325
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Quote:
Originally Posted by mevman
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So, I was quick on the draw ---- 
However, even the BEST of us will skim over a little due to rushing out.
__________________
Dale&Susan, 08 Alfa Gold, DaGirlsRv Blog
2015 F-150XLT_2000W Solar_800 AmpHr Lithium
Magnum_MSH 3012 & PT100
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05-10-2020, 09:46 PM
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#9
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Member
Tiffin Owners Club
Join Date: Sep 2008
Posts: 95
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Ours coolant temps behave the same as the OP. We have a Freightliner Cummins ISC 8.3-liter Engine 360 HP.
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