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Block Heater Cord on Gas Truck, Temperature limited?

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Old Nov 17, 2022 | 06:48 AM
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Block Heater Cord on Gas Truck, Temperature limited?

Can anyone tell me the best way to bypass the temperature activated control for the block heater on the Ford Gas motors? I like the idea of plugging in the block heater in -10C / -23F. On the Chev's since 2008 on factory installed block heaters, there is a temperature controlled block heater cords that prevents power transmission until ambient [size=13px]temperature[/size] drops below minus15-18C (-25-28F). There was a Tell Tale molded bulge or block just up from male end of cord.
 
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Old Nov 17, 2022 | 08:22 AM
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Never heard of the block heater being temperature controlled.
And, your temperature comparisons, metric to standard, are way off, -10C is like 11F, not -23F.
 
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Old Nov 17, 2022 | 08:38 AM
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Ford block heaters are pretty simple. You plug them in, they heat. You unplug them, they stop heating.

They might be the simplest system on these trucks.
 
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Old Nov 17, 2022 | 09:47 AM
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Good catch on the conversions, Ltngdrvr, I messed up there.

Pretty sure all block heaters factory installed in NA for at least the last ten years have a temperature control. Don't activate until -18C / 0F on the 2017 Chev I had, (There was a tag on the cord) I don't see the tell tale molded block on the Ford, maybe it is integrated into the plug it self?
 
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Old Nov 17, 2022 | 09:54 AM
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Yeah, I don't think the Ford block heaters are temp controlled, plugged in and they are on.
The ones in the Diesels are that way at least.
 
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Old Nov 17, 2022 | 09:57 AM
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Originally Posted by Ratherbefishing
Good catch on the conversions, Ltngdrvr, I messed up there.

Pretty sure all block heaters factory installed in NA for at least the last ten years have a temperature control. Don't activate until -18C / 0F on the 2017 Chev I had, (There was a tag on the cord) I don't see the tell tale molded block on the Ford, maybe it is integrated into the plug it self?
I'm pretty sure redford is right, you plug them in they heat, you unplug them they stop heating.
 
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Old Nov 17, 2022 | 11:01 AM
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If I remember to I’ll plug my truck in when I get home from work and check it in a couple hours to see if it’s heating up. It’s supposed to be 30ish °F when I get home. 7.3 gasser 350 FWIW.
 
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Old Nov 17, 2022 | 11:54 AM
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Alaska has had a campaign for years not to plug in until it is below 20F because #1 if your truck has starting issues at 30F something is wrong
#2 leaving the block heater plugged in unnecessarily long WILL cause calcification on the element causing it to either explode or stop working
#3 it is a waste of electricity
I am in TN currently and it was 45F and there was an F350 parked in front of a house with the block heaterplugged in. I drove by multiple times for 3 days and the truck is still sitting there plugged in. The people drive cars and the truck appears to just sit. It is only a matter of time before that block heater is inop because it just sits plugged in for days or weeks or months without being turned off.
 
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Old Nov 17, 2022 | 12:03 PM
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Are you sure it was the block heater plugged in and not a battery minder?
 
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Old Nov 17, 2022 | 12:10 PM
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Originally Posted by TB250
Are you sure it was the block heater plugged in and not a battery minder?
The truck is like 5 doors down from my inlaws whose house Immoochdocking at and the truck was plugged in all last winter and I only saw it driven 1 time but when it warmed up into the 60s and 70s it wasn't plugged in anymore and still just sat. It is possible it is a battery tender but they don't plug it in until it gets cold outside.
I've seen the truck driven once all last winter and it was just parked the rest of the winter.
This is something people in Alaska do also except when it gets down to single digits people plug their diesels in and then don't drive them for days.
Inthe Army we were not allowed to leave our trucks plugged in during winter because they never get unplugged and then every single vehicle has an inop block heater before too long. Ive seen them when they try to remove them and they can't because there is so much calcification on the element it doesn't fit back through the hole without breaking it.
 
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Old Nov 17, 2022 | 12:27 PM
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Originally Posted by OBS460
The truck is like 5 doors down from my inlaws whose house Immoochdocking at and the truck was plugged in all last winter and I only saw it driven 1 time but when it warmed up into the 60s and 70s it wasn't plugged in anymore and still just sat. It is possible it is a battery tender but they don't plug it in until it gets cold outside.
I've seen the truck driven once all last winter and it was just parked the rest of the winter.
This is something people in Alaska do also except when it gets down to single digits people plug their diesels in and then don't drive them for days.
Inthe Army we were not allowed to leave our trucks plugged in during winter because they never get unplugged and then every single vehicle has an inop block heater before too long. Ive seen them when they try to remove them and they can't because there is so much calcification on the element it doesn't fit back through the hole without breaking it.
I use a timer, so it can look like it's plugged in, there is no need to have it plugged in all night unless it's in the -40"s. 2 to 3 Hrs is plenty for a gas and 3 to 4 Hrs is good enough for a diesel IMO. But I will re-iterate, unless it's in the -40"s or lower, then I plug it in ALL day, ALL night...
 
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Old Nov 17, 2022 | 12:37 PM
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Originally Posted by OBS460
The truck is like 5 doors down from my inlaws whose house Immoochdocking at and the truck was plugged in all last winter and I only saw it driven 1 time but when it warmed up into the 60s and 70s it wasn't plugged in anymore and still just sat. It is possible it is a battery tender but they don't plug it in until it gets cold outside.
I've seen the truck driven once all last winter and it was just parked the rest of the winter.
This is something people in Alaska do also except when it gets down to single digits people plug their diesels in and then don't drive them for days.
Inthe Army we were not allowed to leave our trucks plugged in during winter because they never get unplugged and then every single vehicle has an inop block heater before too long. Ive seen them when they try to remove them and they can't because there is so much calcification on the element it doesn't fit back through the hole without breaking it.
With modern coolants, there would be no possibility of calcification of the heating element.
 
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Old Nov 17, 2022 | 12:40 PM
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So far, my truck has seen a number of single digit, and below zero single digit temps, and has never even slightly balked at starting right up.
I didn't even get a block heater on it when I ordered it.
 
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Old Nov 17, 2022 | 12:48 PM
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Block heaters can have benefits beyond helping cold starts. A warmed block provides faster heat to the windshield in frosty or freezing rain weather.
 
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Old Nov 17, 2022 | 01:35 PM
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Adding non-distilled water or the wrong mix of antifreeze can still cause lime and calcium buildup. You have to take the average intelligence into consideration and realize at least half of the people who have a truck with a block heater dont even know what type of coolant to add even with access to an owner's manual or that you have to used distilled water.
 
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