I don't know but that's a very good question ��

 

My 14' gives me all 3. Drive, idle, and the total of the 2

 

Yeah, drive and idle are separate, as the two total up to the total value. Probably calculate idle hours when engine is running and no signal through wheel speed sensors, but what do I know!!!!! That's the way I'd do it.

 

I like the way you would do it, same goes for me.

 

Drive=when car is in gear. Idle based on ignition on and car in Neutral.

 

Do you know for sure that's how it's calculated?

 

Mine shows all my engine hours under drive. I thought I read that idle was only counted on diesels. Mine says 642 drive hours, 0 idle; and I know I've spent over an hour idling over the life of the truck.

 

I got it! Dodge put different programming in various trucks to make us all think we are crazy.

 

i think eemdee nailed it.

 

How can you legally sell your truck if you cannot sign the Federal statement about true miles?

 

I was told it is rpm related. That idle hours are just that. If you idle in the up-idle mode it will not record as idle hours. Still not sure how idle hours are calculated.