High idle mod
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Mountain Pass
Joined: Apr 2021
Posts: 234
Likes: 28
High idle mod
Is it normal to have it set up to where you start it and if the conditions are met it goes straight into high idle? I wasn't sure if that would be healthy for the motor to just start idling at 1,200 rpm immediately after startup
FTE Legend
Joined: Mar 2017
Posts: 31,930
Likes: 9,189
From: Western NY
That's why you wire it to one of your outfitter switches so if it's cold in winter where you live, wait til engine gets the oil going and flowing, for 30 seconds to a minute then pop the switch.
Fleet Owner
Joined: Jan 2004
Posts: 26,007
Likes: 575
From: Brentwood,CA
Even without the high idle switch the truck is programmed in cold weather to bring the rpms up to 1100 rpm in the right conditions. With the high idle switch if all the parameters are met it will engage within 15 seconds of starting.
Lead Driver
Joined: Jan 2010
Posts: 6,600
Likes: 84
If it's cold and I want to high idle it for a bit while I deal with a few things or while I scrape windows, I flip the switch (mine is 1,400 RPM) within 10 seconds or less. In cold weather, it runs at 5 PSI boost for 2-3 minutes then spools down the turbo. It's quicker to drive it to get heat though if the windows are clear.
At least for the early 2011, it's at 1,100 RPM or so as soon as the engine turns over in single digits so I decided 7-10 seconds is plenty of time.
I'm not saying the engines in brush trucks or ambulance builds last a long time but from the sound of a few 6.7L I've seen and heard I know they're >3,000 RPM out of the lot, cold and rolling steam.
At least for the early 2011, it's at 1,100 RPM or so as soon as the engine turns over in single digits so I decided 7-10 seconds is plenty of time.
I'm not saying the engines in brush trucks or ambulance builds last a long time but from the sound of a few 6.7L I've seen and heard I know they're >3,000 RPM out of the lot, cold and rolling steam.
FTE Legend
Joined: Mar 2017
Posts: 31,930
Likes: 9,189
From: Western NY
When it's really cold outside, I remote start the truck so it runs for a few minutes before I get in and drive to work. I have a big hill to climb not even a quarter mile from my house. I'm real careful to keep it no higher than 2000 RPM to wait for the oil to reach at least 100 degrees F. No full throttle until engine fully warmed up to operating temps.
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Laughing Gas
Joined: Apr 2011
Posts: 851
Likes: 14
I wired in the high idle on my 2015 6.7. Turned out to almost never use it because the truck will adjust RPMs on its own to keep sufficient warmth. No issues idling at -40*F, sometimes for 24+ hours straight.
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Post Fiend
Joined: Nov 2001
Posts: 6,748
Likes: 118
From: Tallassee, ALabama
If you start the truck with a key and the parameters are set, it should activate the high idle. Using remote start will not activate the high idle.
2011-2016 SEIC
https://madocumentupload.marketingas...b525f&v5=False
2017-2019 SEIC
https://madocumentupload.marketingas...78e55&v5=False
2011-2016 SEIC
https://madocumentupload.marketingas...b525f&v5=False
2017-2019 SEIC
https://madocumentupload.marketingas...78e55&v5=False
FTE Legend
Joined: Mar 2017
Posts: 31,930
Likes: 9,189
From: Western NY
I could have sworn that during the colder days after I remote start my truck, she goes into a higher idle. I'll have to wait for the next winter to take note Larry. Appreciate the input as well.
Fleet Owner
Joined: Jan 2004
Posts: 26,007
Likes: 575
From: Brentwood,CA
If you start the truck with a key and the parameters are set, it should activate the high idle. Using remote start will not activate the high idle.
2011-2016 SEIC
https://madocumentupload.marketingas...b525f&v5=False
2017-2019 SEIC
https://madocumentupload.marketingas...78e55&v5=False
2011-2016 SEIC
https://madocumentupload.marketingas...b525f&v5=False
2017-2019 SEIC
https://madocumentupload.marketingas...78e55&v5=False
Post Fiend
Joined: Nov 2001
Posts: 6,748
Likes: 118
From: Tallassee, ALabama
Not everyone has or has owned a 2017-2019.
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