Has any one wired something up so that you can tell when the engine is in 3,4,6 cyl. modes?

 

I wonder if something like a Scangauge would show it?

 

Nope, but I can feel them deactivating.

 

Still don't understand why they don't show this on the center info display when its showing mpg. Just a small "VCM3" and "VCM4" pop up would have been perfect.

Also I do wonder, is VCM engaged when idle?

 

No it isn't.

 

I miss the auto stop feature from my hyrbrid. Not sure why that isn't on all cars.

 

Bet it means to be transparent to the user. I thought I was pretty sensitive dirver but I cannot feel the "switch over". The only time I can sense it when getting < 35 mpg display on highway at 65 mph.

 

When cruising on a plan road it works in 3 cyl, when you accelerate with the cruising controls it goes on 4 cyl and the same when cruising uphill. When you press hard on the gas it is 6 cyl. The fuel economy gauge will hint you. When it's going to the max it's 6, when moderate acceleration it's 4, when it's less then mid point it's 3 cyl.

I even cruise in the city as it automatically works in 3 cyl if the computer detects no acceleration

 

Depending on what live data you can get from a generic OBD2 scanner, you should be able to tell what mode it is running in based on MAF readings. It would require more air to run on 6 cyl than 4 or 3 cyl. As someone else stated, the fuel economy readings would also change for the better if it is going from 6 cyl to something else.