mine can idle forever and never gets over 130 when its cold outside...only way I can build more heat is to drive it, thats even after installing an electric fan

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I'm about to show my hillbilly ways and stuff some cardboard in front of the rad

 

y put card board in the front mine heats up just fine and holds temp fine ya it cools off when its at idle but hell it cools off at idle in the summer time

 

how do you set high idle

 

Turn cruise control on and hit the resume/accel button (I believe that is the correct one) and it will bump up the rpms until 1200 rpm is reached. You can also have it flashed on at a dealership to do it automatically when its is cold enough.

 

want it to warm up faster in the morning when I start it, tired of having to set at high idle with exhast brake on for up for 20-30 minutes to get enough heat to clear the frost of the windsheild

 

on trucks up to 09 there is a wire under the dash by the emergency brake tht has to be grounded and u have to have a programer or take it to dodge and have it flashed for it to work and 2010 and up not sure on them they are different i think the autos will do it stock but the standard trucks wont if i remember right