follow ft86club on our blog, twitter or facebook.
FT86CLUB
Ft86Club
Delicious Tuning
Register Garage Members List Calendar Search Today's Posts Mark Forums Read

Go Back   Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community - FT86CLUB > 1st Gens: Scion FR-S / Toyota 86 / Subaru BRZ > Scion FR-S / Toyota 86 GT86 General Forum

Scion FR-S / Toyota 86 GT86 General Forum The place to start for the Scion FR-S / Toyota 86 | GT86


User Tag List

Reply
 
Thread Tools Search this Thread
Old 05-20-2014, 01:16 AM   #1
scionfrs2014
Member
 
Join Date: Dec 2013
Drives: Scion FRS
Location: Maryland
Posts: 29
Thanks: 74
Thanked 6 Times in 6 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Garage
How does AC impact power?

AC consumes power. I try to use minimum AC as I need. My Scion FRS has a manual-controlled AC wheel. Does it consume more power if I turn the AC wheel to the maximum versus turn to the middle? Thanks.

Update - to clarify my question, does FRS/BRZ's AC just have binary mode, on and off? Or can it work progressively as the control-wheel? turn?

Last edited by scionfrs2014; 05-20-2014 at 12:16 PM.
scionfrs2014 is offline   Reply With Quote
The Following User Says Thank You to scionfrs2014 For This Useful Post:
SirBrass (05-20-2014)
Old 05-20-2014, 01:26 AM   #2
Snowblind
Banned
 
Join Date: Feb 2013
Drives: 2013 FR-S
Location: SE
Posts: 424
Thanks: 25
Thanked 490 Times in 161 Posts
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
With the AC off you will get beat in a race by a Camry.

With the AC on you will get beat in a race by a Corolla.
Snowblind is offline   Reply With Quote
The Following 16 Users Say Thank You to Snowblind For This Useful Post:
Alltezza (03-18-2018), CatDaddysBBQ (05-21-2014), continuecrushing (05-21-2014), Crashdummy (03-18-2018), driftking96 (05-19-2016), ERA (03-19-2018), gramicci101 (05-21-2014), guybo (03-19-2018), JD001 (05-13-2019), Mr.ac (03-19-2018), Pseud0logik (05-21-2014), SCQTT (03-19-2018), Starkiller (05-20-2014), tCsonfrs (03-22-2018), tennisfreak (05-21-2014), Thrustin (05-21-2014)
Old 05-20-2014, 01:38 AM   #3
SirBrass
Trust me, I'm the Doctor
 
SirBrass's Avatar
 
Join Date: Nov 2013
Drives: 2019 WRX Limited (WRB)
Location: North East PA
Posts: 2,723
Thanks: 4,304
Thanked 1,250 Times in 780 Posts
Mentioned: 33 Post(s)
Tagged: 1 Thread(s)
Garage
Quote:
Originally Posted by Snowblind View Post
With the AC off you will get beat in a race by a Camry.

With the AC on you will get beat in a race by a Corolla.
Horse shit on both accounts. Learn to downshift.

I've not really noticed a significant power drop either way. But as to the OP's question, yes it will use more power as you're asking the AC compressor to work harder by removing more heat.

On phone I am. Therefore, if mistakes I make, Frank Oz blame you should.
__________________
Subies Of Blessed Memory: '05 Forester, '08 WRX, '13 STi
Daily Driver: 2014 BRZ 6MT Limited


^GT5 Replay Photo Mode^
SirBrass is offline   Reply With Quote
The Following User Says Thank You to SirBrass For This Useful Post:
JohnJuan (05-20-2014)
Old 05-20-2014, 01:41 AM   #4
humfrz
Senior Member
 
Join Date: May 2013
Drives: 2013 FR-S, white, MT
Location: Puyallup, WA
Posts: 28,447
Thanks: 26,242
Thanked 29,071 Times in 15,373 Posts
Mentioned: 671 Post(s)
Tagged: 2 Thread(s)
Quote:
Originally Posted by scionfrs2014 View Post
AC consumes power. I try to use minimum AC as I need. My Scion FRS has a manual-controlled AC wheel. Does it consume more power if I turn the AC wheel to the maximum versus turn to the middle? Thanks.
Well, yes, the more the compressor runs, the more power it consumes.

Having said that ..... my personal experience has been that I'm much more "comfortable" if mrs humfrz is comfortable. Now, if I turn the little wheel so that she is most comfortable ..... it may cost another 1/2 cent per mile ..... on the other hand ...... the "cost" of living through one of mrs humfrz's hot flashes is .......


humfrz
humfrz is offline   Reply With Quote
The Following 25 Users Say Thank You to humfrz For This Useful Post:
13un (05-21-2014), 8RZ (03-19-2018), Adam_L (05-12-2019), Braces (05-20-2014), Chattanooga FR-S (05-20-2014), Churnobyl (05-21-2014), e_lunatic (05-13-2019), Fly Guy (05-20-2014), Fortis (05-21-2014), FreshFRS (05-21-2014), g e (03-18-2018), JD001 (05-13-2019), JoeHK (05-20-2014), JustBoostin (05-20-2014), Jyn (05-20-2014), Mad1723 (05-20-2014), Mister (05-20-2014), onefitz (05-21-2014), pcporo (05-20-2014), Purdue FR-S (05-20-2014), Quentin (05-20-2014), Ramster (05-21-2014), Rayme (05-21-2014), SirBrass (05-20-2014), STV3 (05-21-2014)
Old 05-20-2014, 02:01 AM   #5
Bailey
Member
 
Join Date: Apr 2014
Drives: 2013 Raven FR-S
Location: RI
Posts: 23
Thanks: 19
Thanked 11 Times in 8 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
The blower fan speed doesn't have an effect on power (aside from the miniscule electrical draw), just the AC On/Off. Adding any accessory that's belt driven will theoretically cause a loss in power. Superchargers overcome it with boost, but AC compressors just draw power while in use.

I don't know if the varying degrees of AC matters as much as simply On/Off, in terms of power loss.
Bailey is offline   Reply With Quote
The Following User Says Thank You to Bailey For This Useful Post:
strat61caster (05-20-2014)
Old 05-20-2014, 02:09 AM   #6
Demandred7
Senior Member
 
Demandred7's Avatar
 
Join Date: Jun 2012
Drives: 2018 Camry XSE V6
Location: Breslau, Ontario, Canada
Posts: 1,094
Thanks: 1,041
Thanked 367 Times in 228 Posts
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by Snowblind View Post
With the AC off you will get beat in a race by a Camry.

With the AC on you will get beat in a race by a Corolla.
Camry V6 maybe (but it will be close).

Corolla - no way in hell. My previous car was a 2009 Corolla XRS - the FR-S is definitely faster (regardless of AC).
Demandred7 is offline   Reply With Quote
The Following 2 Users Say Thank You to Demandred7 For This Useful Post:
Adam_L (05-12-2019), SirBrass (05-20-2014)
Old 05-20-2014, 02:55 AM   #7
DC2R
Senior Member
 
Join Date: Dec 2013
Drives: 2014 Scion FR-S
Location: United States
Posts: 1,020
Thanks: 699
Thanked 159 Times in 132 Posts
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
The car stitches off the compressor when you get on the gas. You shouldn't feel much loss in power when you need it. That being said down here in humid Miami that kind of sucks since it never cools car down unless I drive like a granny.
I have a question of my own. It's this car just like an old Honda ever the temperature dial is just a direct connection to the heater block valve? For example the a.c. is always on max and moving the dial away from max just add coolant into the mix?

Sent from my SM-G900T using Tapatalk
DC2R is offline   Reply With Quote
Old 05-20-2014, 02:57 AM   #8
Yrr
Member
 
Yrr's Avatar
 
Join Date: Apr 2014
Drives: Toyota GT86
Location: The Netherlands
Posts: 40
Thanks: 64
Thanked 23 Times in 7 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by humfrz View Post
Having said that ..... my personal experience has been that I'm much more "comfortable" if mrs humfrz is comfortable. Now, if I turn the little wheel so that she is most comfortable ..... it may cost another 1/2 cent per mile ..... on the other hand ...... the "cost" of living through one of mrs humfrz's hot flashes is .......


humfrz
LOL quite the same "issue" over here.
Yrr is offline   Reply With Quote
Old 05-20-2014, 10:41 AM   #9
billwot
Senior Member
 
Join Date: Mar 2014
Drives: '11 Cayman , '14 Camry, '11 Tacoma
Location: Eastern NC
Posts: 509
Thanks: 57
Thanked 396 Times in 198 Posts
Mentioned: 5 Post(s)
Tagged: 1 Thread(s)
1) A/C at full load conditions requires about 3-5 HP.

2) A/C does not run continously, but cycles off and on.

3) A/C drops out at WOT.
billwot is offline   Reply With Quote
The Following 4 Users Say Thank You to billwot For This Useful Post:
Busybee (03-20-2018), DC2R (05-21-2014), feedbag (05-22-2014), JohnJuan (05-20-2014)
Old 05-20-2014, 01:12 PM   #10
pasternak
Member
 
Join Date: May 2013
Drives: Asphalt FR-S
Location: Va
Posts: 78
Thanks: 12
Thanked 59 Times in 29 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
I've noticed minimal power loss from the AC. Adding a passenger kills the power way more.
pasternak is offline   Reply With Quote
Old 05-20-2014, 01:55 PM   #11
irucremmi
Member
 
Join Date: Sep 2013
Drives:
Posts: 37
Thanks: 2
Thanked 40 Times in 11 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Reroute air vents into air intake when ac on for more powah... : P
irucremmi is offline   Reply With Quote
The Following 3 Users Say Thank You to irucremmi For This Useful Post:
e_lunatic (05-13-2019), gramicci101 (05-21-2014), Surok (03-18-2018)
Old 05-20-2014, 02:34 PM   #12
Harvey
Senior Member
 
Join Date: May 2014
Drives: Celica 5th Gen, Tiburon 04, GT86
Location: France
Posts: 135
Thanks: 2
Thanked 58 Times in 16 Posts
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Yes... AC makes cold air and is mixed with hot air to obtain the required temp. When AC is on it doesn't matter what temp you set, the required power is that of turning the pump (approx 8HP I've often read...) But as stated, normally the ECU cuts the AC when full throttle, so you shouldn't really feel power drop but rather temperatur increase in the cabin!
Harvey is offline   Reply With Quote
The Following 2 Users Say Thank You to Harvey For This Useful Post:
DC2R (05-21-2014), scionfrs2014 (05-20-2014)
Old 05-21-2014, 06:50 AM   #13
Maritime Storm
Member
 
Maritime Storm's Avatar
 
Join Date: Apr 2014
Drives: 2013 Scion FR-S 6spd, Whiteout
Location: Riverview, NB
Posts: 96
Thanks: 0
Thanked 47 Times in 20 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Garage
HUMFRZ; Sums it up nicely. If Momma ain't happy, ain't nobody happy. Worse than that, if Momma ain't happy, I get stuck in the passenger seat real quick.
Maritime Storm is offline   Reply With Quote
The Following User Says Thank You to Maritime Storm For This Useful Post:
humfrz (05-21-2014)
Old 05-21-2014, 09:57 AM   #14
bluesman
Member
 
Join Date: Mar 2014
Drives: 2015 FR-S
Location: east coast
Posts: 83
Thanks: 10
Thanked 50 Times in 26 Posts
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by humfrz View Post
my personal experience has been that I'm much more "comfortable" if mrs humfrz is comfortable. Now, if I turn the little wheel so that she is most comfortable ..... it may cost another 1/2 cent per mile ..... on the other hand ...... the "cost" of living through one of mrs humfrz's hot flashes is .......
Ahhh - the blessings of womanhood......

But I was under the mistaken impression that this is a temporary phenomenon that will resolve over time. I can testify under oath that this is simply not so. Some nights, I wake up with no covers and find the entire blanket and quilt wrapped around my wife. Others, I wake up to an open window in the middle of winter. Yet the hormone levels dropped along with Ross Perot's shot at the White House.

Words to live by: "Trusting a menopausal woman to control her emotions is like trusting a tornado to mow your lawn." (And I'm just not being a MCP - it's no more pleasant for them than it is for us.)
bluesman is offline   Reply With Quote
The Following User Says Thank You to bluesman For This Useful Post:
humfrz (05-21-2014)
 
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Way too loud. Best fix for minimal impact? transition Engine, Exhaust, Transmission 55 07-24-2014 12:02 PM
Air temps and impact on engine load brn12345 Software Tuning 0 04-30-2014 03:50 PM
[SYD] Milwaukee M18 1/2" High-Torque Impact Wrench 2663-22 eckoflyte Australia Classifieds 2 08-27-2013 06:19 AM
Affordable Battery Impact Gun/Drill that can handle lug nuts swift996 Mechanical Maintenance (Oil, Fluids, Break-In, Servicing) 12 07-30-2013 12:46 AM
HOW PHOTOGRAPHY CAN IMPACT DETAILING RESULTS Greg Gellas Cosmetic Maintenance (Wash, Wax, Detailing, Body Repairs) 0 03-23-2013 03:18 AM


All times are GMT -4. The time now is 06:52 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2022, vBulletin Solutions Inc.
User Alert System provided by Advanced User Tagging v3.3.0 (Lite) - vBulletin Mods & Addons Copyright © 2022 DragonByte Technologies Ltd.

Garage vBulletin Plugins by Drive Thru Online, Inc.