Warming up takes too long...

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red deer
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Both 2012
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Hemi 5.7 & Cummins 6.7
Maybe it's just me... our 2012 Cummins is deleted and the egr is turned out, but still on the the engine. Once winter sets in we keep it plugged in constantly, we command start the truck and run it for 30 minutes to warm up before going anywhere. The temp guage doesn't seem to want to move at all until I'm 30 minutes down the hiway, oh ya the winter front is on an closed up too.
Am I having an issue with a stuck open thermostat or is it simply the egr cooler that still on the side the engine keeping the coolant cold.
Any suggestions guys/gals
season greetings to all
Thanks,
Justin
 

GTyankee

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I used to live east of New York State, in Connecticut

We did not have block heaters or closed up garages.
Our 2 car garage did not have a door, my parents parked in there, i parked out in the driveway.

All 3 cars were kept from getting frozen engine blocks, by going to an Appliance Store & asking them if they minded if we took the cardboard boxes that had been Refrigerator shipping wrap.

We kept the cardboard in the garage during the day, but we parked over it when the Temps dropped.

Everyone thinks the engine block freezes up, from above.
Actually, what freezes the block is the cold releasing from the ground, the heavy cardboard helps protect the engine & transmission
 
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Justin Stafford
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Location
red deer
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Both 2012
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Hemi 5.7 & Cummins 6.7
I used to live east of New York State, in Connecticut

We did not have block heaters or closed up garages.
Our 2 car garage did not have a door, my parents parked in there, i parked out in the driveway.

All 3 cars were kept from getting frozen engine blocks, by going to an Appliance Store & asking them if they minded if we took the cardboard boxes that had been Refrigerator shipping wrap.

We kept the cardboard in the garage during the day, but we parked over it when the Temps dropped.

Everyone thinks the engine block freezes up, from above.
Actually, what freezes the block is the cold releasing from the ground, the heavy cardboard helps protect the engine & transmission
Don't think your understanding what I'm asking here buddy
 

Rlaf75

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How long have you had the truck? Did this long warm up time just start happening? I personally don't own one but every diesel engine I had in the tow trucks I used to drive for work always took forever to warm up.
 

Gr8bawana

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I used to live east of New York State, in Connecticut

We did not have block heaters or closed up garages.
Our 2 car garage did not have a door, my parents parked in there, i parked out in the driveway.

All 3 cars were kept from getting frozen engine blocks, by going to an Appliance Store & asking them if they minded if we took the cardboard boxes that had been Refrigerator shipping wrap.

We kept the cardboard in the garage during the day, but we parked over it when the Temps dropped.

Everyone thinks the engine block freezes up, from above.
Actually, what freezes the block is the cold releasing from the ground, the heavy cardboard helps protect the engine & transmission
problematic-stressed.gif

You don't know what you're talking about because heat rises and cold air settles to the ground.
I'm sure you also had anti-freeze in those vehicles and that is why the blocks did not freeze.
 

star_deceiver

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I had full temp with the winter front with about 10km of driving, plugged in or not with only 1 min of warm up time. Thermostat would be a good place to start.
 

06 Dodge

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If you have a winter front on and its fully closed off I would look to see if the T-stat being stuck open, if you do need to change it out, buy a Cummins T stat, I have read of many others not having good luck with off brand cheap T stat..
 

MyTruck

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Plug the engine block heater. Mine takes 3 hours. The engine block heater is activated at 4 AM. By 7 AM, the temp gauge is at 120 degrees when started.
 

huntergreen

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Diesels do take longer to heat up. Thick cast iron. My 04 5.9 seemed to take forever, even when plugged in. Did this from new. I was told by the dealer it was normal. I did have a fast idle. I also had heated seats so it was never a real issue for me.
 

06 Dodge

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My 06 5.9 even with winter front would take 10 miles to get to full operating temps, longer if in sub zero temps...
 

Wilytrash

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Here in Wisconsin I had a VW diesel. After a couple of miles my engine cold light would go off, which meant it was warm. At below zero degrees if I was just idling for more then 15 minutes the cold engine light would come back on. I had to be moving to keep the engine warm.
 

Dean2

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Starting a Diesel and leaving it idle for more than a couple of minutes is just wasting fuel. Nothing is warming up as it sits. Plug it in, start it and after 60 seconds or so drive it GENTLY till it warms up. Now for your issue, the fact it is taking so long, even being driven, to warm up and with the winter front fully closed, would make me suspect your Thermostat is stuck open. Even the older Cummings, which were never known for pumping out a lot of heat in the winter, don't take that long to get to operating temp. Like already said, use an OEM thermostat.
 

StNick

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The problem you are having is characteristic of a diesel. Diesels are very efficient (compared to gas engines) at idle - they don't use much fuel at idle but also don't heat up at idle. That's how big trucks can idle for 10 hours at a time without overheating. Unfortunately that is a problem when you try to heat up the vehicle by idling. Believe me, big trucks are the same way.
 
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Justin Stafford
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Both 2012
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Hemi 5.7 & Cummins 6.7
The problem you are having is characteristic of a diesel. Diesels are very efficient (compared to gas engines) at idle - they don't use much fuel at idle but also don't heat up at idle. That's how big trucks can idle for 10 hours at a time without overheating. Unfortunately that is a problem when you try to heat up the vehicle by idling. Believe me, big trucks are the same way.
I'm not unfamiliar with diesels especially cummins, I've been a trucker for 20 years, this is why I'm asking this question, it's just too long to warm up to operating temp.....
 

turkeybird56

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I'm not unfamiliar with diesels especially cummins, I've been a trucker for 20 years, this is why I'm asking this question, it's just too long to warm up to operating temp.....
Would try a new thermostat first then work from there. Just IMHO...
 

Dean2

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I'm not unfamiliar with diesels especially cummins, I've been a trucker for 20 years, this is why I'm asking this question, it's just too long to warm up to operating temp.....
Well then, you started this thread 5 days ago, have you changed the thermostat yet? Outside of that or a sending unit that is actually reading low, there aren't too many other things it can be.
 
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