CRIVERHD12

I waited outside yesterday while my wife went into the store and I had my truck running to keep warm and I noticed after about 5 minutes or so the engine revs up to 1000 rpm but if I step on the brake it will idle down. It was like I was turning on the high idle. It did this a couple of times. The temp. outside was about 28-30 degrees. Does this sound normal or should I have it looked at ? Any help would be appreciated. Thank you in advance.

JohnnyH

Normal. If certain parameters are met, Outside Air temp, Engine temp, it will automatically idle at 1000 RPM. Once the engine reached a certain temp it idled back down. This is completely normal.

Casey Balvert

Haunted. ........... but normal.

Lightman

That's the automatic high idle feature. I believe it's covered in your owner's manual. In any case, it's totally normal, and sometimes will come on even after the truck is fully warmed up, provided you idle it for a while in cold ambient temps.

t-15 firefighter

yep... like everyone else said, completely normal. pretty cool feature huh?

britt

Hairy1

Normal for sure

jerry007

I ask the same question a while back My 03 does it when its really cold like 25F or below ( thats cold for us). Its better than putting a stick between the seat and acc pedal

CRIVERHD12

THANK YOU everyone nowI feel much better

Chubby

I also have the High idle that i can set with the criuse. Works Great

Bubba_CTD

That is NOT norma, you should park it and have it towed to the dealer as soon as you can.

Nah, it's normal.

bigblock2stroke

The elevated idle is different from the cold weather idle up feature on automatics. All diesels (manual trans and 48re) will go to 1000 rpm for reasons stated above. Only the automatics can have the cold weather idle up feature that allows you to adjust the engine idle set speed from 1200 to 1500rpm (until the Mopar clutch switch comes out anyway).

nickleinonen

and if it gets cold enough outside, the engine will start up right at 1000rpm... [mine's done that many times this winter i hate winter ]