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Originally Posted by LocutusOfBorg
Hmm... if you're picking up a larger draw with the voltmeter after startup, but not after "park and go" (no draw in your case - since you are able to do short hops with no ICE at all  ) there has to be something to this - whether it's uniform across all prius IIs is still up for debate.
What I saw was in both cases was I was able to do "pulse & glide" (and getting ICE to shut off) immediately, compared to at least 3 minutes after a cold start - suggesting the computer knew the ICE was already warm. [...] |
Well, there is probably more to it than just being able to pulse and glide. My experience is that once you leave the car idle in the power on state for a while, the first bar after you start again is always much higher than usual (Canadian cars uses L/100km on the display, higher bar means higher consumption rate). That is the case even when pulse and glide is fully enabled. My interpretation is that the car is burning rich after the idle, to bring the catalytic converter back to temperature perhaps. I think this rich burn is much more of a drain than the initial burn during a warm start. And it happens regardless of a power down or not.
As for Dan's strip mall hopping, the rich burn after idle doesn't affect him multiple times as he is running EV. So keeping the car powered would make sense. But here in Canada, there is no strip mall big enough to require hopping like that. I would claim that the difference between powering and shutting down is quite minor if you just park the car once, go walk around in the mall, and then go home right away.
Andy