6.7 Great Cold Start
Question for you guys... when the temps are low (less than 10-15 degrees F), what does your oil temp read if you've had the truck plugged in overnight?
I was curious this morning (6 degrees) so I went out to start it rather than using the remote... it'd been plugged in all night and the oil read 13 degrees and tranny read 11 degrees.
I'm thinking my block heater must not be working.
I was curious this morning (6 degrees) so I went out to start it rather than using the remote... it'd been plugged in all night and the oil read 13 degrees and tranny read 11 degrees.
I'm thinking my block heater must not be working.
In the good old days of the 7.3, the block heater warmed the oil as well as the coolant, because it was installed in the oil cooler. The heater on the 6.7 is in the block, in the water jacket, so it's not heating the oil directly.
Cold warmup strategy will not idle down with anything other than shifting out of park but it seems to be a smooth transition.
While in gear, it is normal idle RPM's or at least close to it (at least above 0°F).
I didn't know about neutral, learn something new every day.
It won't be 1,200 RPM while stopped and if it is, then that's not normal because that would be difficult to keep stopped in my opinion.
SEIC will disable by pushing the service brake or releasing the e-brake.
While in gear, it is normal idle RPM's or at least close to it (at least above 0°F).
I didn't know about neutral, learn something new every day.
It won't be 1,200 RPM while stopped and if it is, then that's not normal because that would be difficult to keep stopped in my opinion.
SEIC will disable by pushing the service brake or releasing the e-brake.
Cold warmup strategy will not idle down with anything other than shifting out of park but it seems to be a smooth transition.
While in gear, it is normal idle RPM's or at least close to it (at least above 0°F).
I didn't know about neutral, learn something new every day.
It won't be 1,200 RPM while stopped and if it is, then that's not normal because that would be difficult to keep stopped in my opinion.
SEIC will disable by pushing the service brake or releasing the e-brake.
While in gear, it is normal idle RPM's or at least close to it (at least above 0°F).
I didn't know about neutral, learn something new every day.
It won't be 1,200 RPM while stopped and if it is, then that's not normal because that would be difficult to keep stopped in my opinion.
SEIC will disable by pushing the service brake or releasing the e-brake.
Neutral works the same. I use Neutral all the time if I am stopping but leaving the vehicle running (say, locking a gate or something) and it will go right back up to cold temp high idle. It's not brake related, it's temperature related. Sometimes if I start my truck and let it idle for hours it will pass 120°F and switch back to a regular idle speed until it gets cold then it will start roaring again. Depending on the outside temperature, it may never ever get up to full operating temperature until you drive it, so in the mean time it will just keep switching between high idle and regular idle.
It is a nice feature for sure, if I fire up any of my older mechanical Diesel trucks in cold weather I have to manually do high idle with my foot! I know many were modified with a manual pull out handle or **** in the dash.
I'm on my 3rd winter with this truck so lots of the cold weather operation behaviour on the truck are just 'normal' and I find it strange that it gets brought up on the forums sometimes but then I think, oh yeah I guess it does that, but I never really think much of it or felt it to be interesting enough to make a post about it. Arguably we have more months of winter weather than summer weather here.
Yeah, it's not normally this cold for this long in parts of the US so everyone is noticing "new" things.
I just flip on SEIC when I want to idle (which can't be run from neutral).
Provides heat in the winter and cool air in the summer.
I just flip on SEIC when I want to idle (which can't be run from neutral).
Provides heat in the winter and cool air in the summer.
After speaking with the dealer that has my truck right now I've learned absolutely nothing more than I already knew.
The dealer had to call someone from Ford to tell them that the high idle feature uses ambient temperature and engine temps to determine if it should be in high idle. It also says that in the diesel engine supplement that came with my owners manual. I would have thought the dealer would know that.... I was wrong.
I explained to him that I felt it was to some degree a safety issue that the truck is running at twice the normal idle speed and that I have proof of a situation that could have caused a crash because of the situation. He agreed.
Also, I find it hard to believe that it's "OK" to double the idle speed of ANY vehicle and drop it in gear! One would think that must cause undo stress on a drive train.
The dealer had to call someone from Ford to tell them that the high idle feature uses ambient temperature and engine temps to determine if it should be in high idle. It also says that in the diesel engine supplement that came with my owners manual. I would have thought the dealer would know that.... I was wrong.
I explained to him that I felt it was to some degree a safety issue that the truck is running at twice the normal idle speed and that I have proof of a situation that could have caused a crash because of the situation. He agreed.
Also, I find it hard to believe that it's "OK" to double the idle speed of ANY vehicle and drop it in gear! One would think that must cause undo stress on a drive train.
Its awesome how these 6.7s start up. Mine has never not started, went to -36 one night shift and I never plugged it in, started right up
Here my -30ish, not plugged in over night
Coldstart30 - YouTube
Here my -30ish, not plugged in over night

Coldstart30 - YouTube
Its awesome how these 6.7s start up. Mine has never not started, went to -36 one night shift and I never plugged it in, started right up
Here my -30ish, not plugged in over night
Coldstart30 - YouTube
Here my -30ish, not plugged in over night

Coldstart30 - YouTube
You will noticed I said "went to" as in it was no where near that cold when I got to work and did not plug in, so yes, do you suggest I walk home?
yea .. id stick with whatever i feel like .. dont forget it .. you want start youre trucks go ahead . personally id left my truck sitting next to my fountain and drove my other choices of transportation .. witch are several .. i guess im fourtunate enough not to have to beat my crap like that . although i just plug it in.. if for some reason i had to drive my truck , but no need to pull that fountain in winter in 40 below weather . maybe my newfs will pull my sled back n forth to work ,, hm maybe .. you guys have a nice nite ,, sory to touched a nerve . lol alot ... oh i wasnt bashing you , tough guys ..
Its awesome how these 6.7s start up. Mine has never not started, went to -36 one night shift and I never plugged it in, started right up
Here my -30ish, not plugged in over night
Coldstart30 - YouTube
Here my -30ish, not plugged in over night

Coldstart30 - YouTube
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