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Tom Richards
Goo Roo
nsw
V8

Posts: 1093
Reg: 08-2005

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Tuesday, June 19, 2012 - 09:36 am, by:  Tom Richards (Tomr) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

the heater will work on max, and only sometimes at lower temps.

The lever on the actuator goes fully in when turned to MAX, but goes to fully out as soon as temp is reduced below max.

Should this lever slowly move in/out as temp is varied? OR be either full in or full out?

what will cause this? ( is it a sticky vsv?).

Does the voltage to the vsv vary with temp adjustment there by giving various vacuum to the actuator and therefore changing the flow of water thru the heater core?
Adam Lonergan
Goo Roo
Victoria
UZZ32 #369 (V8)

Posts: 1487
Reg: 08-2005

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Saturday, July 07, 2012 - 08:14 pm, by:  Adam Lonergan (Alchemistal) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Check your radiator coolant level... it should be filled just above MAX.
Boris Siljanoski
Goo Roo
Western Australia
LS400 + Soarer.

Posts: 1609
Reg: 11-2007

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Saturday, July 07, 2012 - 08:23 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)

By actuator do you mean the Motor on the flap near the heater core, or the VSV Valve in the Engine bay.

Either way i'd say defective knob try another climate control unit.
Wayne Womersley
TryHard
Victoria
V8 Limited

Posts: 368
Reg: 12-2011

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Sunday, July 08, 2012 - 09:53 am, by:  Wayne Womersley (A49kidx) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Tom the Actuator shaft is either fully in or fully out. It is fed vacumn from the VSV value. The VSV value works the same as the water inlet value on your washing machine. It is a solenoid value, an electro magnetic value. It is either in or out. A small vacumn pipe runs to VSV value/tap and then to the Actuator. The actuator controls the hot water flowing to the heater core. The VSV is fed by 12 volts, and only 12 volts from the temperature control ECU. Say at a set 22*c the VSV will be switched on & off to maintain that temp, and so the actuator will fluctuate between flow & no flow or hot water.......
Wayne Womersley
TryHard
Victoria
V8 Limited

Posts: 369
Reg: 12-2011

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Sunday, July 08, 2012 - 10:05 am, by:  Wayne Womersley (A49kidx) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

On the far left passenger side under the glove box is the heater fan. On top of it is a motor/actuator with a flap, which controls whether the air is from outside or internally recirculated.
Tai Johnsen
Goo Roo
QLD
JZZ30 Pov Manual LSD & black!

Posts: 1185
Reg: 04-2006

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Monday, July 09, 2012 - 12:01 pm, by:  Tai Johnsen (Privatejohnsen) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

I had this problem on my v8 ages back.. The temperature on the dash didnt work either..

Then i swapped out the ac control unit and it all worked..

http://soarercentral.com/sc-forum/messages/282/40761.html

So it could be the ac unit itself maybe..?
Kyle Wathen
Goo Roo
Vic
UZZ31

Posts: 1021
Reg: 02-2007

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Thursday, July 19, 2012 - 02:04 pm, by:  Kyle Wathen (Cspot) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Could be related to the transistor module?

http://soarercentral.com/sc-forum/messages/31680/250051.html?1224320246

Tai - how is the black soarer going?
Tai Johnsen
Goo Roo
QLD
JZZ30 Pov Manual LSD & black!

Posts: 1186
Reg: 04-2006

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Friday, July 20, 2012 - 04:51 pm, by:  Tai Johnsen (Privatejohnsen) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Hey Kyle,

Still going strong.. I have lots of stuff waiting to bolt on, just waiting for the right turbo and a bit of money to come along :-)

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