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Old Jan 13, 2025 | 10:03 AM
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Normal engine temp

I took my truck into the dealer because the engine is not getting up to temp, the highest it will go is 184 and then it drops down to 170 something and back up. Service writer called to say engine temp is normal. I explained to him the temperature fluctuations, the max temp it was getting up to and he asked me what I thought normal operating temperature is and I said 195

Am I incorrect?

ETA: Dealer called to say the truck got up to 184 and that's within spec. The dealer is also refusing to replace the warped rubber mounding around the rear sliding window, said Ford will not cover it. Maybe our Ford rep can chime in?
 
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Old Jan 13, 2025 | 10:22 AM
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Those are about the temps I see with mine during the colder winter months. You have a huge cooling system on your truck, and without a load on it, it will be tough to get it up to higher temps.
 
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Old Jan 13, 2025 | 10:26 AM
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I'm no expert, but today its 6 degrees (F) above zero...cruising the back roads with 7k lbs. in tow I'm seeing 171 for engine temps. I'm calling it normal because its cold and my t-stat has 81k miles on it. I wouldn't worry.
 
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Old Jan 13, 2025 | 10:42 AM
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Originally Posted by Garbageman 134
I took my truck into the dealer because the engine is not getting up to temp, the highest it will go is 184 and then it drops down to 170 something and back up. Service writer called to say engine temp is normal. I explained to him the temperature fluctuations, the max temp it was getting up to and he asked me what I thought normal operating temperature is and I said 195

Am I incorrect?

ETA: Dealer called to say the truck got up to 184 and that's within spec. The dealer is also refusing to replace the warped rubber mounding around the rear sliding window, said Ford will not cover it. Maybe our Ford rep can chime in?
Ford rep on here is just a go-between to customer service, they have no technical knowledge or direct contact with any tech support.
I never pay any attention to coolant temps as I travel so long as they are not going high, but I surely would have thought the coolant temp should be getting up to the opening point of the t-stat, which is 190+ as far as I know.
I do not know what Ford says the correct operating temp is for these trucks.
What ambient temps are you running in where you are?
 
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Old Jan 13, 2025 | 10:52 AM
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Originally Posted by Ltngdrvr
Ford rep on here is just a go-between to customer service, they have no technical knowledge or direct contact with any tech support.
I never pay any attention to coolant temps as I travel so long as they are not going high, but I surely would have thought the coolant temp should be getting up to the opening point of the t-stat, which is 190+ as far as I know.
I do not know what Ford says the correct operating temp is for these trucks.
What ambient temps are you running in where you are?
From 6F to 40'ish. If the dealer refuses to replace the thermostat I will just take care of that myself but I am more concerned about the Warped rubber molding around the rear sliding window
 
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Old Jan 13, 2025 | 12:02 PM
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Originally Posted by Garbageman 134
From 6F to 40'ish. If the dealer refuses to replace the thermostat I will just take care of that myself but I am more concerned about the Warped rubber molding around the rear sliding window
At those temps mine is usually around 179*F... In the summer it's usually around 190*F cruising flat and 219*F small hills empty...
 
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Old Jan 13, 2025 | 01:31 PM
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And this is why auto makers put "dummy" gauges in their vehicles . . . . .
 
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Old Jan 13, 2025 | 02:23 PM
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Originally Posted by acadianbob
And this is why auto makers put "dummy" gauges in their vehicles . . . . .
My truck threw a CEL about this weeks ago while driving to TN. Problem is I cleared the dtc's while using forscan.
 
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Old Jan 13, 2025 | 04:26 PM
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Wonder why manufacturers would put dummie guages on these vehicles. Everyone thinks it should be something other than specs once they see "real" numbers and not know what specs are taking up an appointment from someone that might actually need a repair.

 
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Old Jan 13, 2025 | 05:29 PM
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Originally Posted by Garbageman 134
From 6F to 40'ish. If the dealer refuses to replace the thermostat I will just take care of that myself but I am more concerned about the Warped rubber molding around the rear sliding window
Well, I don't know that I would go so extreme as to replace that t-stat, think I would watch it for a while unless it is causing you some other issue.
As to the rubber gasket on the window, is it outside the 3/36 warranty or something?
 
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Old Jan 13, 2025 | 07:15 PM
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Originally Posted by Ltngdrvr
Well, I don't know that I would go so extreme as to replace that t-stat, think I would watch it for a while unless it is causing you some other issue.
As to the rubber gasket on the window, is it outside the 3/36 warranty or something?
Might be a good life lesson. Nothing would change. Coolant temp fluctuates. Oil pressure fluctuates. Lots of variables; temperature, RPM, load, . . . . .
 
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Old Jan 14, 2025 | 04:37 AM
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Originally Posted by Garbageman 134
I took my truck into the dealer because the engine is not getting up to temp, the highest it will go is 184 and then it drops down to 170 something and back up. Service writer called to say engine temp is normal. I explained to him the temperature fluctuations, the max temp it was getting up to and he asked me what I thought normal operating temperature is and I said 195

Am I incorrect?

ETA: Dealer called to say the truck got up to 184 and that's within spec. The dealer is also refusing to replace the warped rubber mounding around the rear sliding window, said Ford will not cover it. Maybe our Ford rep can chime in?
Info on the truck would be helpful.

FWIW - my truck seems to take FOREVER to warm up when it is cold outside. However, once it does completely warm up, it runs between 198°F and 202°F pretty much regardless the time of year. Like I said, when it is cold it takes much longer to get there but it does indeed get there. Lots of BTUs are required to raise the temperature of that much liquid from low temps to 200°F.
 
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Old Jan 14, 2025 | 10:04 AM
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On my older diesels trucks, 1995 & 2006, I would place a piece of cardboard in front of the radiator, behind the grill, to increase the engine temp in cold weather. You may try this to see if it changes anything. If the temp gauge doesn’t show any higher temp I would think either the gauge is faulty or thermostat is stuck open.

Good luck,

Mike
 
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Old Jan 18, 2025 | 02:41 AM
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Originally Posted by Ltngdrvr
Well, I don't know that I would go so extreme as to replace that t-stat, think I would watch it for a while unless it is causing you some other issue.
As to the rubber gasket on the window, is it outside the 3/36 warranty or something?
Nope. Dealer said it is deformed due to the window opening and closing.
 
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Old Jan 18, 2025 | 02:42 AM
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Originally Posted by Mike Bartlett
On my older diesels trucks, 1995 & 2006, I would place a piece of cardboard in front of the radiator, behind the grill, to increase the engine temp in cold weather. You may try this to see if it changes anything. If the temp gauge doesn’t show any higher temp I would think either the gauge is faulty or thermostat is stuck open.

Good luck,

Mike
Cant get in there without removing plastic covers or the grill
 
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