Hi guys, Long time lurker, first time poster.
Just a quick question on my new 6.7l instantaneous fuel economy display (green bar).


At idle, the bar is pegged at 40l/100km. When the vehicle is moving, the bar graph drops down to its proper 14ishL/100km mark.

At idle, the vehicle display should be under the 14L mark, because the engine is using little fuel. When the display is pegged, it also causes the number display on the graph (the instantaneous 14L/100 number) to creep up as well. In the span of 3 or 4 minutes at idle, the instantaneous average (calculated number) will creep from approx 14.5l/100 to 19l/100. So its pretty obvious the computer is using the 40l/100 number in its average.

Id almost swear that the display was working correct when the truck was new (2 wks ago), ive done nothing to change it, but for whatever reason its working backwards to what it should be doing (all my other vehicles' instantaneous display drop to almost 0 when at idle).

Its not the end of the world, and I can wait till its at the dealer next time to figure it out, but it is a bit of an annoyance.

Oh and Im not in the middle of a regen or something like that either, AFAIK. Actual mileage on a tank of fuel isnt reflecting that 40L/100 figure on the display.

 

When stopped you are using more fuel per 100 km though.

 

Switch it to mpg and it will go down while stopped.

 

Lol Thanks!

I guess I got stuck thinking in MPG. At park, its really infinite L/100. Doh! Now Im going to have to go back and double check what my other vehicles display at idle because Im not so sure anymore.