Yes, the high idle and the 3 cylinder idle were not used by dodge when the vehicles were produced. The information for the high idle is on the ECM from Cummins. So in order to have it activated, you need to either have a SMARTY tune uploaded or go to the dealer and have it flashed on.

 

Okay so can you choose either the 3 cylinder high idle or the high idle? Or when they flash it does it automatically enable both?

 

You want both anyway

 

Why do I want both? If the 3 cylinder kicks in when intake temp is 32 degrees or lower and the coolant temp is 140 or lower, when does the high idle ever kick in? Or when they flash the high idle, is that where you can hit the cruise and it bumps up?

 

For our trucks, the high idle and 3 cylinder high idle, are one and the same. You are unable to get one or the other. I don't know if we can get a flash to use our cruise control to kick in the idle features.

 

Thats one of the things I like on the 03s and newer. I would love to be able to set it with the cruise control

 

That would be great. I would love that feature on mine as well.

 

High idle kicks in at a certain temp, and even colder temps activate 3cylinder and high idle.

 

If youre in Minnisota you shouldnt have any trouble getting the high idle to kick in. You will need to leave the truck unplugged to get it to come on. And it does work really well.

 

I had to tell my dealer to enable the 3 cylinder idle. That is what his computer called it. I love it. I dont even plug my truck in anymore because the high idle will actually give me heat in the cab in about 10 minutes or so. The 3 cylinder idle only kicks in at 15 or below. I havent experienced that yet. Good luck.