Save gas by not running A/C with defrost - Toyota Yaris Forums

stran · 11-19-2008, 07:38 PM

http://www.yarisworld.com/forums/showthread.php?t=10888

jambo101 · 11-20-2008, 04:59 AM

I'm a worse than all thumbs type,a pictorial walkthrough would really be helpful.

Bob_VT · 11-20-2008, 07:21 AM

Quote:

Originally Posted by stran

*i meant "by" not "but" but i can't edit the title*

http://www.yarisworld.com/forums/showthread.php?t=10888

Yes, you can edit a title. After you hit the EDIT button then hit GO ADVANCED and you will have the optiion of editing the title.

eTiMaGo · 11-20-2008, 07:57 AM

i fixed it

stran · 11-20-2008, 10:57 AM

Quote:

Originally Posted by Bob_VT

Yes, you can edit a title. After you hit the EDIT button then hit GO ADVANCED and you will have the optiion of editing the title.

thanks

Tamago · 11-20-2008, 11:01 AM

dry air is what makes defrost work....

why take out the AC?

stran · 11-20-2008, 11:11 AM

So can you control when to run A/C instead of running it all the time. Here's what I do when it's cold at night (and hence near the dew point which means things fog easily) or when it's raining:

To prevent fog from forming - defogger mode with cold air. I also do this when I start my car. By not having the A/C on, it's not as cold in the cabin and I don't need to poach heat from the engine so it warms up faster. Cold engine = bad bad gas mileage.
A little fog - defogger mode with warm/hot air. No A/C = no compressor = half the gas consumption at idling (according to SG II).
Heavy fog - haven't had time to see if I even need to run A/C to clear the windshield, but if needed, I will run it in spurts instead of running it all the time.

Also, running the rear defogger has almost no impact on gas consumption - it uses less gas than turning on the headlamps.

11-19-2008, 07:38 PM	#1
stran Drives: '07 Yaris 3D HB Auto Join Date: Jul 2007 Location: Cal Posts: 44	Save gas by not running A/C with defrost http://www.yarisworld.com/forums/showthread.php?t=10888 Last edited by stran; 11-20-2008 at 10:57 AM.

11-20-2008, 07:57 AM	#4
eTiMaGo vroom vroom View User's Garage Drives: lil red 5-door Join Date: Sep 2006 Location: Bangkok, Thailand Posts: 7,744	i fixed it __________________ The price of freedom of religion, or of speech, or of the press, is that we must put up with a good deal of rubbish. - Robert Jackson Bye bye 1NZ...

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11-20-2008, 04:59 AM	#2
jambo101 Drives: yaris 08 sedan Join Date: Oct 2008 Location: Montreal Canada Posts: 1,286	I'm a worse than all thumbs type,a pictorial walkthrough would really be helpful.

11-20-2008, 11:01 AM	#6
Tamago Start another Oil Thread! View User's Garage Drives: ZZW30 Join Date: Dec 2006 Location: South FL Posts: 4,890	dry air is what makes defrost work.... why take out the AC?

11-20-2008, 11:11 AM	#7
stran Drives: '07 Yaris 3D HB Auto Join Date: Jul 2007 Location: Cal Posts: 44	So can you control when to run A/C instead of running it all the time. Here's what I do when it's cold at night (and hence near the dew point which means things fog easily) or when it's raining: To prevent fog from forming - defogger mode with cold air. I also do this when I start my car. By not having the A/C on, it's not as cold in the cabin and I don't need to poach heat from the engine so it warms up faster. Cold engine = bad bad gas mileage. A little fog - defogger mode with warm/hot air. No A/C = no compressor = half the gas consumption at idling (according to SG II). Heavy fog - haven't had time to see if I even need to run A/C to clear the windshield, but if needed, I will run it in spurts instead of running it all the time. Also, running the rear defogger has almost no impact on gas consumption - it uses less gas than turning on the headlamps.