'05 doesel cold weather high idle feature

[GSP7]

Diesel is misspelled in title

Does this sound correct?
Not sure what all years this quote is about. Im interested in info on my '05

There are 2 different types of high idle features.

First everyone has the AUTO high idle feature, when the temp is cold enough the idle will ramp up to 1000rpms on its own and stay there until you touch brake or the go pedal. And it will return to 750rpms when it senses temp of coolant and air intake is warm enough. If its only cool and not cold, it will idle up to 1000rpms on its own after about 2 minutes.

Second feature is the manual high idle which is controlled through the cruise control buttons. It can be turn on at any time regardless of outside temp or motor temp. Turn cruise on, press set button, engine revs to 1100prms, you can increase/decrease rpms from 1100 to 1500 rpms using the acel and resume buttons. touching the brake or go pedal will return the engine back to 750rpms. Late 03-04 trucks need to have a TSB applied and then the feature needs to be enabled - 04.5 and up trucks just need the feature enabled by the dealer(some will charge you for this).
If truck has vaccum controlled cruise it will not work, 03 and some 04 trucks I think. Also for a manual transmission there other things that need to done before using the feature.#ad

 

[AH64ID]

Yes it’s correct.
~32°F and below the rpms increase to 1,000 after 2 minutes.
~15°F and below the rpms increase to 1,000 when you start the truck.

Is yours a manual or an automatic?

 

[GSP7]

auto trans

I read stuff about some kind of cylinder kill feature so in only runs on 3 cylinders during high idle. Is that some kind of aftermarket add on "app" (programing).
Years ago Moparman was selling something like that for 2nd gen trucks

 

[AH64ID]

3cyl is for VP44 trucks only.

With the auto trans you just need the feature enabled for manual fast idle.

 

[GSP7]

On another forum there is a thread about 2005 3cyl fast idle ?

So, whatever, there is so much wrong info on all the forums , dont know who really knows whats true and what is false

 

[BigPapa]

there is so much wrong info on all the forums , dont know who really knows and what is false

You can pretty much trust anything you find here on TDR. These fellows have been around these trucks since they were introduced. If someone posts up something that's incorrect, as I have been known to do lately, the fellows that know are quick to politely inform us that the info was wrong.

 

[Ozymandias]

3cyl is for VP44 trucks only.

With the auto trans you just need the feature enabled for manual fast idle.

I'm pretty much sure mine did it before I used the Smarty. Sounded very much like a rock crusher...
Climate was really cold, way below freezing and extended idling, the 1000rpm came first, a couple minutes later the 3-cyl.

 

[AH64ID]

I'm pretty much sure mine did it before I used the Smarty. Sounded very much like a rock crusher...
Climate was really cold, way below freezing and extended idling, the 1000rpm came first, a couple minutes later the 3-cyl.

It’s well documented as a VP44 function, I’ve never seen anything indicating it followed into the CR world.

 

[Deathrowdave]

Mine does raise , my old 4BT increases timing until warm .