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Ou-yang Liang Qing
Tinkerer
Melbourne
V8

Posts: 31
Reg: 04-2010

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Thursday, October 07, 2010 - 11:01 pm, by:  Ou-yang Liang Qing (Raphael_86) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

I just realised when i turn on my aircon in my soarer, the rpm increases, so i repeated it many times and it seems that everytime i leave it on, the rpm on Drive idles at 1100 and with it off it idles at roughly 800.
Anyone faces the same issues and knows why or what is causing this?
David Grima
DieHard
WA
1JZ-GTE TT

Posts: 668
Reg: 07-2007

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Friday, October 08, 2010 - 02:04 am, by:  David Grima (Maltezr) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

its not a problem......its perfectly normal man, the aircon needs the slight increase in rpm to run it.
Rowan McMahon
TryHard
WA
GTT-L

Posts: 116
Reg: 07-2010

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Friday, October 08, 2010 - 02:32 am, by:  Rowan McMahon (Mr_eps) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

yeah man.. it's the air con clutch. all cars have it :-)
Daniel Arndt
TryHard
Vic
UZZ31 LTD

Posts: 140
Reg: 03-2010

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Friday, October 08, 2010 - 07:04 am, by:  Daniel Arndt (Darndt) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Its not the clutch. The clutch is simply there to disengage all the internals of the compressor from spinning when not required.

Its inbuilt into the engine management system. Not 100% sure how the soarer one works but when you activate the A/C I would think the IAC (Idol Air Control) Valve adjusts to make the engine idol at higher revs.
I always thought this was due to the additional load on the engine so idol was adjusted to reduce risk of laboring the motor.
On a diesel I had the same thing happened but was controlled via an electric solenoid on the side of the injector pump which physically pushed the throttle a open a little.
Ou-yang Liang Qing
Tinkerer
Melbourne
V8

Posts: 32
Reg: 04-2010

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Friday, October 08, 2010 - 05:17 pm, by:  Ou-yang Liang Qing (Raphael_86) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

The thing is, this morning, when i tried the same thing again, by repeatedly starting my airconditioning and turning it off, the problem doesn't surface and the rpm remains constant.
Yesterday when the problem surfaced whenever i turn the aircon on, i could feel the sudden boost feeling of the car moving forward in which i had to brake slightly more to stop the car.
Damian Ware
Goo Roo
Victoria
UZZ32

Posts: 1763
Reg: 10-2005

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Friday, October 08, 2010 - 05:27 pm, by:  Damian Ware (Frozenpod) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

I assume from your description the engine was cold thus it has a higher RPM and the change with air con being turned on is smaller thence less noticeable.
Matt Sartori
DieHard
Western Australia
Rx7

Posts: 851
Reg: 08-2008

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Friday, October 08, 2010 - 05:30 pm, by:  Matt Sartori (Klutch) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

I like to turn it on and off.
Makes the car sound like it has lumpy cams.

...im easily amused
Boris Siljanoski
Goo Roo
Western Australia
LS400 + Soarer.

Posts: 1164
Reg: 11-2007

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Friday, October 08, 2010 - 11:54 pm, by:  Boris Siljanoski (Z2tt) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

It's not a problem, everything you mentioned is normal.
Ou-yang Liang Qing
Tinkerer
Melbourne
V8

Posts: 33
Reg: 04-2010

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Saturday, October 09, 2010 - 01:14 am, by:  Ou-yang Liang Qing (Raphael_86) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

alright cool guys, another thing, and i found this out just earlier. While my v8 was turned on and running, i was adjusting some wiring stuffs on the passenger side, after roughly 1 min, the car engine turned off, and i turned it on again and waited, but this time after 2 minutes nothing happened. This is the first time i felt this, any suggestions?
Austen Menze
Goo Roo
WA
GT-TL

Posts: 1172
Reg: 07-2009

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Sunday, October 10, 2010 - 01:09 pm, by:  Austen Menze (Mercyfulfate) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Doesn't like you touching it's wiring stuffs.
Joshua Baldwin
DieHard
victoria
ucf-11 1uz-fe v8

Posts: 542
Reg: 10-2009

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Wednesday, October 13, 2010 - 03:40 pm, by:  Joshua Baldwin (Celsior101) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

reset ecu
Nathan Richardson
TryHard
N.T.
UZZ32 #445 (V8 Supercherged 5Speed. 291RWKW)

Posts: 321
Reg: 02-2006

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Wednesday, October 13, 2010 - 11:09 pm, by:  Nathan Richardson (Richtheblack) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)


Ou-yang Liang Qing wrote on Saturday, October 09, 2010 - 01:14 am:

i was adjusting some wiring stuffs on the passenger side




Joshua Baldwin wrote on Wednesday, October 13, 2010 - 03:40 pm:

reset ecu



Yup, that's where it is. Probably momentarily disconnected something.
Jol Alexander
DieHard
Vic
UZZ31 V8 (no mods)

Posts: 735
Reg: 07-2009

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Friday, October 15, 2010 - 07:06 pm, by:  Jol Alexander (Courage) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Guys everycar i have ever had increases revs when you engage aircon.... soarer or not.

I thought this was common knowledge?..
Mark Bryant
Tinkerer
tasmania
2jz na/t and tt

Posts: 59
Reg: 08-2010

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Friday, October 15, 2010 - 08:06 pm, by:  Mark Bryant (2jz_nat) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Yer i can't turn the air con on in my daily,it drains to much power from the engine.lol.
Note that my daily is a 3 cylinder 700 odd cc matiz.
Ou-yang Liang Qing
Tinkerer
Melbourne
V8

Posts: 35
Reg: 04-2010

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Tuesday, October 19, 2010 - 11:34 am, by:  Ou-yang Liang Qing (Raphael_86) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Is that true? This is the first time I experienced this, drove stuffs like evo X back home and don't experience this even with voltage meter and rpm meter.

But since this is a normal thing then it's fine.

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