Quote:
Originally Posted by brucepick
Hmmm.
I see one additional requirement in the AutoStop-on-demand concept.
You need to fool the system into thinking the car is stopped (or moving very slowly) to activate AutoStop. BUT - you also want to see your speed on the speedometer once the engine is killed. And you want the odometer to count up miles, so you can see your improved fuel economy.
I don't know how to do both, at the same time.
I think the solution would be to reprogram the computer. But I have now idea how.
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I suspect the computer is responsible for causing auto-stop, while the cluster displays MPH, counts miles, and keeps track of fuel economy independently. Intercepting the VSS signal to one hopefully will not disrupt the other.
It may be a useful test to see if auto-stop still works if the cluster is unplugged - there's a data connection between cluster and ECU, AFAIK. I dunno if it checks for parity.