So the other day I went out to start my truck, and i was a idiot the night before and didn't plug the truck in. Needless to say it was -25 degrees farenheit, and i had to go to work. So i started it and it all sounded good, and it went into its normal high idle (elevated to 1200 rpm), and then without it changing rpms, it sounded like it got rougher in running, almost like it dropped a few cylinders. I then proceded to tap on the brakes, and it instantaniously went back to normal, and then not even 45 seconds later it went back to doing that same thing. I bought this truck about a year ago from a dealership that said it had never been chipped, and I had a new ECM put in it not even three months ago. Does chrysler have a flash where the engine at a certain temperature will go into a three cylinder high idle?

 

yep that sounds like the 3 cyl. idle

 

Is it a good thing?, and would chrylser have put that on with the new ecm

 

it helps your truck warm up faster, normally they have to be enabled through the ECM. are you the 1st owner ?

 

if it wasn't normal, it wouldn't be available in the ECM...

I would imagine if you got a new ECM, it was flashed with all of the latest TSB's one of which is the TSB for High Idle Operation.

 

hey anyone with a smarty in the chicago land area??? i would really like to get it. i will buy beer(assuming your of age)

 

it's normal if you have a new ECM...read this TSB: http://dodgeram.info/tsb/2001/18-019-01.htm
it's a feature that reduce warm up time..

rob

 

thanks smokinram99, that article was really informative.