HVAC system

bigrob126 · 02-14-2011, 02:09 PM

I have the base HVAC system in my Z. Every time I put the fan on for the vent, the AC compresser comes on and I have to then turn it off. Is there a way around this? Why would it not stay off unless I want to switch it on?? It is most annoying. As far as I can tell in the OM reading, it is supposed to do this....I think.

Thanks!

kenchan · 02-14-2011, 03:06 PM

climate control usually runs a/c to control not only cooling but also humidity. why do you want the compressor off while driving on street, especially on a AT car? i know some newbs like to turn off ac when practicing MT.

i just dial in a good temp and leave it.

AllForTheCash · 02-14-2011, 03:46 PM

Quote:

Originally Posted by kenchan

climate control usually runs a/c to control not only cooling but also humidity. why do you want the compressor off while driving on street, especially on a AT car? i know some newbs like to turn off ac when practicing MT.

i just dial in a good temp and leave it.

Gas Mileage, Power "loss", ..AC sucks the engine dry.

kenchan · 02-14-2011, 04:24 PM

Quote:

Originally Posted by AllForTheCash

Gas Mileage, Power "loss", ..AC sucks the engine dry.

if you're worried about mpg you got the wrong car. for street the car has plenty of power even with a/c on... sucks engine dry... yah well my dd is a Fit so i know what that REALLY means especially on a hot and humid day with family onboard.

bigrob126 · 02-14-2011, 04:29 PM

Quote:

Originally Posted by AllForTheCash

Gas Mileage, Power "loss", ..AC sucks the engine dry.

Exactly!! Why would I want the comp on other than for AC or defogging on a way humid day.....which doesn't happen here in Vegas. That sucker should stay off until I put it on! My C5 Vett was the same way, drove me crazy

Mt Tam I am · 02-14-2011, 04:29 PM

Annoying yes, yet I do not notice the power drop unless the A/C is fully engaged. I do get horrible mileage. I rarely use the A/C for cooling. It just never gets that hot around here.

370Z Purist · 02-15-2011, 01:12 AM

Quote:

Originally Posted by bigrob126

I have the base HVAC system in my Z. Every time I put the fan on for the vent, the AC compresser comes on and I have to then turn it off. Is there a way around this? Why would it not stay off unless I want to switch it on?? It is most annoying. As far as I can tell in the OM reading, it is supposed to do this....I think.

Thanks!

You're correct in that it's supposed to do that: it's just how it's made. It's not the best design decision but it's also the choice that makes the most sense. Even in the summer here I just roll the windows down, and if I'm on the highways, I just turn on the AC. There's plenty of power and the gas mileage is sh!t as it is.

RockStarKick · 02-15-2011, 10:42 AM

Quote:

Originally Posted by bigrob126

I have the base HVAC system in my Z. Every time I put the fan on for the vent, the AC compresser comes on and I have to then turn it off. Is there a way around this? Why would it not stay off unless I want to switch it on?? It is most annoying. As far as I can tell in the OM reading, it is supposed to do this....I think.

Thanks!

This has been driving me nuts too... Wish there was an option for this..

sonic370 · 02-15-2011, 11:57 AM

Yes it is a pain. Just do what everyone else does. Push on the button...

RockStarKick · 02-15-2011, 12:10 PM

Also I noticed that you can't recirculate without the A/C compressor coming on...

Jeffblue · 02-15-2011, 12:20 PM

supposedly the AC turns off under WOT.

esfourteen · 02-15-2011, 01:37 PM

Quote:

Originally Posted by Jeffblue

supposedly the AC turns off under WOT.

it certainly seems to from my experience, hell even the Z32's did this. Still, I agree its somewhat annoying, I just press the button out of habit now.

Jeffblue · 02-15-2011, 01:39 PM

Quote:

Originally Posted by esfourteen

it certainly seems to from my experience, hell even the Z32's did this. Still, I agree its somewhat annoying, I just press the button out of habit now.

vrmmmmmmmmm.....vrmmmmmmmm *need moar power... ::AC OFF:: * VROOOOOOOOOOOOOM SHHH VROOOOOOOOOOOOOOM,SHHHH VROOOOOOOOOOOOOOOM

(Yes AC off = turbo)

cossie1600 · 02-15-2011, 07:38 PM

AC cycle on and off in automatic mode, nothing to worry about. This is a 3.7L V6, plenty of power to spin the compressor

02-14-2011, 02:09 PM	#1 (permalink)
bigrob126 Base Member Join Date: Jan 2011 Location: Las Vegas NV Posts: 134 Drives: 2009 370Z Sport Auto Rep Power: 14	HVAC system I have the base HVAC system in my Z. Every time I put the fan on for the vent, the AC compresser comes on and I have to then turn it off. Is there a way around this? Why would it not stay off unless I want to switch it on?? It is most annoying. As far as I can tell in the OM reading, it is supposed to do this....I think. Thanks! __________________ Rob

02-14-2011, 04:29 PM	#6 (permalink)
Mt Tam I am A True Z Fanatic Join Date: Jun 2010 Location: California Posts: 10,709 Drives: 370Z T/S/N 6MT & XKE Rep Power: 3843	Annoying yes, yet I do not notice the power drop unless the A/C is fully engaged. I do get horrible mileage. I rarely use the A/C for cooling. It just never gets that hot around here. __________________ "Does the carpet match the drapes? NO!!! I don't date bald women." Nissan Motorsports 34R Oil Cooler. Stillen CBE. Hotchkis Sport Sway Bars. KW Variant 3 Coilover System. Stillen Gen3 CAI. Michelin Pilot Super Sport. Stillen Brake Ducts. Carbotech™ XP10/XP8 Pads. Z1 Front Rotors. Z1 Stainless Brake Lines. Two degrees of camber

02-15-2011, 12:10 PM	#10 (permalink)
RockStarKick Enthusiast Member Join Date: Dec 2010 Location: Houston Posts: 298 Drives: it like a rental Rep Power: 15	Also I noticed that you can't recirculate without the A/C compressor coming on... __________________ 2013 Mustang GT, 6M, Track Pack & Leather Recaros 2011 Pearl White 6M /Sport Pkg - SOLD

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02-14-2011, 03:06 PM	#2 (permalink)
kenchan A True Z Fanatic Join Date: Aug 2009 Location: N/A Posts: 76,801 Drives: N/A Rep Power: 141521	climate control usually runs a/c to control not only cooling but also humidity. why do you want the compressor off while driving on street, especially on a AT car? i know some newbs like to turn off ac when practicing MT. i just dial in a good temp and leave it.

02-15-2011, 11:57 AM	#9 (permalink)
sonic370 A True Z Fanatic Join Date: May 2010 Location: Orange Texas Posts: 1,574 Drives: 09 370Z Sports PGK Rep Power: 18	Yes it is a pain. Just do what everyone else does. Push on the button...

02-15-2011, 12:20 PM	#11 (permalink)
Jeffblue A True Z Fanatic Join Date: Dec 2009 Location: NY Age: 36 Posts: 9,192 Drives: Z32TT & 335xi Coupe Rep Power: 37	supposedly the AC turns off under WOT.

02-15-2011, 07:38 PM	#14 (permalink)
cossie1600 A True Z Fanatic Join Date: Jun 2009 Location: californee way Posts: 5,380 Drives: 370, Leaf Rep Power: 30	AC cycle on and off in automatic mode, nothing to worry about. This is a 3.7L V6, plenty of power to spin the compressor