How long do you let your engine warm up? - Diesel Forum - TheDieselStop.com
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99 & up 7.3L Power Stroke Engine and Drivetrain Discussion of the 99 & up 7.3L Power Stroke diesel engine and drivetrain in the 1999-Up Super Duty trucks and Excursions. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 7.3L Power Stroke engine.

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Old 11-20-2006, 09:08 AM   #1 (permalink)
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How long do you let your engine warm up?

I live in montana, and of course winter is setting in. I often wonder how long other 7.3 owners let their engines warm up.
Personaly mine usualy sits idling for 5 minutes every morning. not sure whats recomended.
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Old 11-20-2006, 10:47 AM   #2 (permalink)
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Re: How long do you let your engine warm up?

If it is below 20, I plug the truck in using a timer set for 3-4 hours before my planned departure. I let the WTS light go out and then fire up. If it is really cold (-20) I will wait a minute or so beyond the WTS light going out to fire up. I will I usually wait for the glow plugs to turn off as indicated by the volt meter and then turn on the lights and hit the road. I probably do not drive over 30 mph for the first couple of miles (coolant temp up to 70 or so) then drive as usual.
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Old 11-20-2006, 11:02 AM   #3 (permalink)
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Re: How long do you let your engine warm up?

I use the block heater on a timer as described above. If it's really really cold, I wait 90 seconds before I start driving. (That is the amount of time that elapses between startup and high-idle initiated by the cold weather package. I keep boost below 4 psi until the temperature gauge comes up 1/4 of the way.

If it's running really rough, as in I didn't use the block heater (like leaving work on a cold day, for instance), or if I am going to start out towing after a cold startup, then I will iet it warm up for 5 minutes or so.
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Old 11-20-2006, 12:59 PM   #4 (permalink)
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Re: How long do you let your engine warm up?

Usually about 10 minutes.

I hit the remote start, grab a bite and drink, then look to see if the windshield has defrosted. Sometimes I get distracted and the remote start quits after 15 minutes, so I just hit it again. I like getting in a warm truck. The PSD warms up very fast with its high idle and CAP...way better than my F-150 5.4L or my Yota. I don't plug her in unless it's well below zero. If it's above 50 I don't even use the glow system. Turn and go. [img]/ubbthreads/images/graemlins/smile.gif[/img]
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Old 11-20-2006, 05:12 PM   #5 (permalink)
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Re: How long do you let your engine warm up?

I don't plug in until it gets below zero. I start the truck and make sure it has oil pressure and go. I see no reason to allow it to warm up unless you want it to be warm in the cab.
5W40 synthetic oil helps a bunch.
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Old 11-20-2006, 05:32 PM   #6 (permalink)
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Re: How long do you let your engine warm up?

5-10 minutes depending how cold it is..i let the ebpv do its job..i'll also switch the truck back to stock before i pull out.when the needle starts coming up ill go back to 80 ecno...
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Old 11-20-2006, 06:59 PM   #7 (permalink)
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Re: How long do you let your engine warm up?

Start it, let the pressures come up and drive away. Take it easy for the first couple of miles. The one winter I let it idle for 3-5 minutes I ended up with fuel in the oil.
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Old 11-20-2006, 07:02 PM   #8 (permalink)
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Re: How long do you let your engine warm up?

I'm not an advocate of letting anything sit and idle just to warm up. But, having said that, I believe that any car or truck should sit and idle long enough that it can be driven safely and reliably without dieing or otherwise creating a safety hazzard on the street for its occupants or other drivers. If a vehicle runs badly, let it warm up until it runs better. In reality, I probably sit and idle at some local intersections for 3-5 minutes just due to traffic and some rediculously long traffic lights anyway.

For my own situation, if necessary (35deg and below) I unplug the block heater, start my truck and walk about 100 ft to open my yard gates, then I walk back, if necessary clean snow off or scape windows, then get in the truck and drive through the gates, get out and close the gates, if necessary scrape additional ice from the windows. So, while I recommend getting in and just driving very conservatively until the temp guage starts registering some heat, in reality I may get in 3-5 minutes of idle time before hitting the street also. I say this realizing that I live in central Indiana, it doesn't hit negative double digits very often or stay there very long on those times when it does.
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Old 11-20-2006, 07:09 PM   #9 (permalink)
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Re: How long do you let your engine warm up?

I'll usually let it go at least 2 minutes, often 5, and if it's really cold (as in the couple times a year I travel to the snow) as in 0* or so, I'll let it go 10-15 minutes. On normal days, I normally go out and start it, go back inside to brush my teeth, and grab my last minute stuff, and by the time I get back outside and into the truck and settled, it's probably been 3-5 minutes.

Even in hot temps, such as 90s, on the initial start I like to let it idle for at least 30 seconds, just so I feel that the oil's had enough time to get all throughout its various paths. I still like to let it go a minute or two, anyway.
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Old 11-20-2006, 08:59 PM   #10 (permalink)
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Re: How long do you let your engine warm up?

I unplug the heater, flip her back to stock, fire it up and idle for 3 to 5 min. Neighbors aren't too fond of the straight piped F18.
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Old 11-20-2006, 09:12 PM   #11 (permalink)
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Re: How long do you let your engine warm up?

i do the same as many.. plug it in when under 40*. in mornin i unplug it, and let her get the oil warm for as long as it takes me to dring a cup o'joe, so 5-10 min depends what articles are in the paper that day.
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Old 11-20-2006, 10:26 PM   #12 (permalink)
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Re: How long do you let your engine warm up?

usually no more than 30 seconds.
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Old 11-20-2006, 10:30 PM   #13 (permalink)
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Re: How long do you let your engine warm up?

what does "plip it back to stock " mean?
been sitting here scratching my head trying to figure out what that means.
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Old 11-20-2006, 10:45 PM   #14 (permalink)
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Re: How long do you let your engine warm up?

I put my 6 position TS chip back to stock mode.
1 stock
2 50 HP
3 75 HP
4 100 HP
5 125 HP
6 HOLD ON [img]/ubbthreads/images/graemlins/smokin.gif[/img]
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Old 11-21-2006, 12:21 AM   #15 (permalink)
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Re: How long do you let your engine warm up?

[ QUOTE ]
I live in montana, and of course winter is setting in. I often wonder how long other 7.3 owners let their engines warm up.
Personaly mine usualy sits idling for 5 minutes every morning. not sure whats recomended.

[/ QUOTE ]

Cold morning with no frost, start it, pressure comes up, buckle up and adjust radio (maybe 30 seconds) drive it at 35 mph or so for first couple miles (since all my roads are 35 for several miles to major roads).

Frosty or snowy morning, start, scrape frost/clean snow and leave.
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