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gq factory thermo
Posted: Mon Oct 22, 2007 9:57 pm
by GOT MUD
i was not sure if mine was working properly so i put some power to it and it fired up so i thought i will just run it by a switch to the dash which is working okay and the truck only gets when towing up ranges etc so i thought id flick it on then etc so the Q is
anyone see any dramas with this set up ?
and should i be running a relay and how

?
at the moment power is running though a fused power staight from the battery though switch and out to the fan
any help would be great
cheers

Posted: Tue Oct 23, 2007 2:00 pm
by JWB
AFAIK they run only when the Air conditioning compressor is powered up.
Does your AC work? do you have AC?
other than that, have you had the radiator out and cleaned? ( Ever?)
start with the easy stuff
cheers
Posted: Tue Oct 23, 2007 2:49 pm
by jessie928
JWB wrote:AFAIK they run only when the Air conditioning compressor is powered up.
Does your AC work? do you have AC?
other than that, have you had the radiator out and cleaned? ( Ever?)
start with the easy stuff
cheers
from factory, they will also run when the Engine temp gets to hot. ( regardless of the AC switch
JEs
Posted: Tue Oct 23, 2007 11:17 pm
by GOT MUD
i do have AC but hardly ever use as for the over heating issue it should be fixed havnt towed anything heavy since fixing up the cooling system
the main Q i was asking is can anyone see and probs with doing it the way i said and should it have a relay and how
cheers
Posted: Wed Oct 24, 2007 6:38 am
by JWB
A AC mechanic once told me it should have a relay!
I had a problem with the clutch on the AC compressor.
The AC guys said it burnt out due to getting power being feed back to
clutch when not engaged due to air flow whilst moving?
that's what he told me anyway
I'm electrically challenged
cheers
Posted: Wed Oct 24, 2007 10:25 pm
by Troll00
JWB wrote:A AC mechanic once told me it should have a relay!
I had a problem with the clutch on the AC compressor.
The AC guys said it burnt out due to getting power being feed back to
clutch when not engaged due to air flow whilst moving?
that's what he told me anyway
I'm electrically challenged
cheers
That's not the only thing your challegned at

Posted: Thu Oct 25, 2007 12:53 am
by j-top paj
jessie928 wrote:JWB wrote:AFAIK they run only when the Air conditioning compressor is powered up.
Does your AC work? do you have AC?
other than that, have you had the radiator out and cleaned? ( Ever?)
start with the easy stuff
cheers
from factory, they will also run when the Engine temp gets to hot. ( regardless of the AC switch
JEs
not sure exactly about the GQ but in my GU there are two fans.
one comes on as soon as the aircon is used, and the other comes on only when the engine is really hot (like on 30degree plus days) but if the aircon isnt on the other one wont come on.
i would have thought they both come on.
Posted: Thu Oct 25, 2007 12:57 am
by j-top paj
a thermo fan will draw around 30amps.
i doubt the switch used would be able to handle that kind of current for an extended period of time. you dont want the switch or wiring to melt or catch fire because then you will have bigger problems.
its always a good idea to use a relay for anything over a couple of amps.
maybe post a question in the Auto electrical section?
Posted: Thu Oct 25, 2007 6:24 am
by JWB
Troll00 wrote:JWB wrote:A AC mechanic once told me it should have a relay!
I had a problem with the clutch on the AC compressor.
The AC guys said it burnt out due to getting power being feed back to
clutch when not engaged due to air flow whilst moving?
that's what he told me anyway
I'm electrically challenged
cheers
That's not the only thing your challegned at

Now Now Damo!
Be nice

Posted: Fri Oct 26, 2007 5:11 pm
by g4cube
My temp now goes high when running very slow and in low range. Most of the problem has come about from running 35's at low pressure and the auto is having a tough time of it. Was thinking of putting a bigger thermo on the front with a manual over ride so when the hill climbing starts can put it on and leave it going til i get back to the black stuff. I have flushed the rad myself with the garden hose and changed the thermostat. But it still goes sky high. Would put a auto oil cooler on but want to see what people think.
Posted: Fri Oct 26, 2007 5:32 pm
by j-top paj
g4cube wrote: Would put a auto oil cooler on but want to see what people think.
that would be the first thing i would do if its an auto