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post #11 of 18 (permalink) Old 12-16-2005, 04:01 PM
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Originally Posted by evander
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Originally Posted by iggy1iggy
one reason you may be having this problem is if you are using the windshield defroster the AC compressor is running also to dehumidify the air blowing on the windshield.
Wouldn't the MFD climate screen show AC on if that were the case?
No, because the A/C indicator in the Air Conditioning screen of the MFD indicates if the compressor is locked out or not. Not if the compressor is running or not.

I would strongly suggest leaving the A/C light on during the winter so you can get dehumidification assistance. iggy1iggy, I noticed in your sig that you have an 01. In that model the A/C compressor is belt driven and as such the ICE will run to run the A/C compressor, however on 04+ the compressor is electric and as such does not place a load on the ICE and does not require ICE to run for it to operate. Since the load is electric, the energy the A/C compressor uses will be from the HV system. So, that means battery power, but that battery power comes from a combination of power generated by the ICE while cruising and power that is collected through regeneration. I haven't noticed any significant MPG hit during the summer with the A/C running as it chooses, maybe 1 or 2 mpg, however during the winter I would expect A/C operation to be limited to defrost mode thus making its impact on electricity available in the HV circuit insignificant.

It has been said:
Hybrid drivers come in 3 flavors, greenie, techie and cheapie. Pick any 2.
2005 Prius, Millenium Silver Metallic (color code 1C0) over gray, package 5 (AI)
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post #12 of 18 (permalink) Old 12-16-2005, 04:12 PM
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Default Re: as a prospective buyer . . .

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Originally Posted by sjerseycraig
My test for how well a car heats the cabin is pretty simple. When I was sill in college I used to make a number of trips home for holidays and weekends. These were 200+ mile journeys. Nothing worse than driving for 200 miles in a heavy goose down jacket, let alone a lightweight windbreaker. I always preferred to drive during the winter in shirtsleeves. So, if a car, during the dead of winter can keep you warm in your shirtsleeves the heater works just fine. The Prius does this very well.
Makes me think of the one December I drove my Chevette from CT to CA in late December on I80 in a record cold snap. It was -69 when we stopped somewhere. There were pieces of plywood at some gas pumps with spray painted letters saying not to turn off your car! The Chevette failed your test above misearably. We had ice on the inside of the windows! You had to drive and scrape and wipe, as your breath condensation would freeze to the windshield. It was me and a buddy from high school, and we were COLD! And the "heat" was on full blast. I remember stopping for gas, and we had to run shifts to fill the tank (no little latch to kee the pump going without a hand on it). I had on winter socks, LL Bean boots, long johns, sweat pants, jeans, T-shirt, turtle neck, flannel shirt, ski jacket, gloves and a hat on -- inside the car. This was for what? 2,000 miles I think, never mind 200 (we stopped in PA, but not after that).

god that car was a pile 'o crap!

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post #13 of 18 (permalink) Old 12-16-2005, 05:10 PM
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How about the heat in the old VW microbus?

operator of a 04' Millennium Silver BC #9 \\"Belle\\"
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post #14 of 18 (permalink) Old 12-16-2005, 05:23 PM
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I use a block heater (I live in Finland) and although it is below 0C in the mornings, my MPG is about 45-50. I also bough my car last March and use 40/38 type pressure. With all the tricks I've learned about driving the Prius, the bottom line is: low speed (< 100km/h) implies high MPG.
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post #15 of 18 (permalink) Old 12-16-2005, 11:18 PM
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drtravel47,
If your commute is really short, there's probably nothing you can do to improve gas mileage beyond the mid thirties. But from a practical view, what does it really matter? Say your commute is 5 miles each way, then you're using a gallon of gas every 3.5 days instead of every 4 days. That's 61 cents/day instead of 54 cents/day.

Basically, you've already done the most important thing to reduce fuel consumption, live close to work. It's all minor improvements after that.

Robert Snyder
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post #16 of 18 (permalink) Old 12-17-2005, 10:39 AM
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Default but keep in mind. . .

that trips to and from work constitute only 25-30% of vehicle miles traveled. So having a Prius is still environmentally significant even if the drive to work is short.
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post #17 of 18 (permalink) Old 12-17-2005, 11:42 AM
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Quote:
Originally Posted by dontcheff
I use a block heater (I live in Finland) and although it is below 0C in the mornings, my MPG is about 45-50. I also bough my car last March and use 40/38 type pressure. With all the tricks I've learned about driving the Prius, the bottom line is: low speed (< 100km/h) implies high MPG.
Thanks, dontcheff - your experience matches mine.[/list]

--Mark
'05 Seaside AM
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post #18 of 18 (permalink) Old 12-18-2005, 12:12 AM
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Default Re: but keep in mind. . .

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Originally Posted by sjerseycraig
that trips to and from work constitute only 25-30% of vehicle miles traveled. So having a Prius is still environmentally significant even if the drive to work is short.
Yes, the environmental benefits are very good in this situation, since most cars (other than the Prius and other SULEV/PZEV cars) produce a much larger amount of pollution during warm-up than at other times.

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