When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
FWIW, no parking brake needed for the computer elevated idle at startup - at least on a 2011 6.7. I saw that work first hand in 2011 when I drove to Park City, UT and it was in the teens out.
FWIW, no parking brake needed for the computer elevated idle at startup - at least on a 2011 6.7. I saw that work first hand in 2011 when I drove to Park City, UT and it was in the teens out.
I second that ^^^ but it's not only at startup, it's anytime the ambient temp and engine temp meet certain criteria. I drove over to the parents last winter to snow blow their driveway. When I got there the oil temp was at 100 degrees F and the engine was idling around 1000 rpm. Ambient temp was 4 degrees F. I left the truck running while I cleared the driveway which took about an hour. I returned to the truck and the oil temp was up to 138 and engine was still idling around 1000 rpm. When I got home the oil temp was at 158 and the idle was down to the normal 600ish rpm. I wonder if there's a target temp that the truck tries to maintain with elevated idle speed.
Later that winter with the somewhat warmer temperatures I've noticed that the high idle is also dependent on the ambient temperature as well as the engine temp. With single digit ambient temps and truck oil <140 the truck would idle around 1000+/- rpm but with ambient temps in the 20's its back down at 600 rpm with <140 oil temp.
On another instance I left my truck idling in -4F weather while in the store and the oil temp settled in at around 140F. Seems like it will adjust the idle up to maintain 140F as a minimum oil temp. I've also noticed the 1200 rpm idle with the extreme cold temps.
Ill be able to tell you about a 2015 6.7 soon. Upper 20s here today. Ice on the body and truck cover, not sure if it high idled because I remote started before I could see or hear the truck this morning. I chose warm truck over seeing if high idle worked. (I spent the night at the hospital and only had a light jacket with me since it was 55f out)
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.
