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Location:
Brisbane
Registered:
June 2003
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I supported Toymods
Location:
I renounced punctuation
Registered:
May 2002
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Re: THERMOFAN CONVERSIONS BEWARE!!
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Fri, 08 April 2005 14:25
 
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1) Go to Autoparts store, look thru Trident catalogue and find a thermo switch with the same thread (probably M16 x 1.5) and your required turn on and off characteristics (temperature and polarity). Buy it.
2) ?????
3) Profit.
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Location:
Brisbane
Registered:
July 2004
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Re: THERMOFAN CONVERSIONS BEWARE!!
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Fri, 08 April 2005 14:53
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davies craig kits have adjustable dial your own temp level where fans are switched on.I seem to remember their prices are a little silly though.cheers.Pete.
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Location:
Melbourne, Australia
Registered:
March 2005
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Re: THERMOFAN CONVERSIONS BEWARE!!
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Fri, 08 April 2005 14:56
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| gianttomato wrote on Sat, 09 April 2005 00:25 |
1) Go to Autoparts store, look thru Trident catalogue and find a thermo switch with the same thread (probably M16 x 1.5) and your required turn on and off characteristics (temperature and polarity). Buy it.
2) ?????
3) Profit.
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I have observed this answer pattern from this user before. What does it mean?
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Location:
Brisbane
Registered:
July 2004
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Re: THERMOFAN CONVERSIONS BEWARE!!
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Fri, 08 April 2005 15:26
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Prolly means GT has had a few beers being this time of day and week lol.He is very helpful and knows his stuff though so its prolly good advice! cheers.pete. 
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I supported Toymods
Location:
I renounced punctuation
Registered:
May 2002
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Re: THERMOFAN CONVERSIONS BEWARE!!
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Fri, 08 April 2005 15:47
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| September_Squall wrote on Sat, 09 April 2005 00:56 |
I have observed this answer pattern from this user before. What does it mean?
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Gratuitous ripoff from an episode of South Park. Elves steal underwear for profit. Their business plan was:
1) Steal underwear.
2) ????
3) Profit.
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Location:
Melbourne, Australia
Registered:
March 2005
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Re: THERMOFAN CONVERSIONS BEWARE!!
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Fri, 08 April 2005 15:56
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Thanks for the clarification. I am enlightened.
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Club Member
Location:
sydney
Registered:
May 2002
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Re: THERMOFAN CONVERSIONS BEWARE!!
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Fri, 08 April 2005 21:13
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most toyota senders switch on at about 90C and then switch of around 80-85C , it would be highly unlikely to switch off at 50C as the engine after running for more than 10mins would not get that low again until it has stopped for at least 15-20 mins which means once the fans have switched on they wont switch back off again until you stop driving. The best thing to do is get a vdo sender switch to the range you want and youll also need the adaptor to mount it into the toyota factory fitting. Get one to the exact range you want so you know when your fans will switch in and out.
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Location:
sydney
Registered:
March 2003
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Re: THERMOFAN CONVERSIONS BEWARE!!
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Fri, 08 April 2005 22:34
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some thermo sensors arent for fans
my hilux had a sensor that at 50 or 60 it turned on the overdrive
so if i selected overdrive it would not work until engine got hotter
other times thermo switches might be for the air con
anyway i only use ones from corolla 4age or 20vs as i know they turn on at around 90
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Location:
BRAY PARK BRISBANE
Registered:
March 2005
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Re: THERMOFAN CONVERSIONS BEWARE!!
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Fri, 08 April 2005 23:01
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davis-craig ajustable switch would be the best they are aprox $70, i think i got one at home if you want to come to brisbane northside to get it? $20 and its yours 
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Location:
sydney
Registered:
March 2003
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Re: THERMOFAN CONVERSIONS BEWARE!!
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Fri, 08 April 2005 23:04
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those switches suk they always leak if u fit them in hose
i usually slide the temp thingy inbetween the radiator fins instead of the rad hose
u can buy these devices these days that u connect to power earth and one wire goes to the temperature gauge wire
and u adjust the device to read of the factory temp sensor for the gauge
u can adjust when fan cuts in
but they are like 150 bucks
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I Supported Toymods
Location:
melbourne.vic.au
Registered:
May 2002
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Re: THERMOFAN CONVERSIONS BEWARE!!
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Fri, 08 April 2005 23:18
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| sideshow wrote on Sat, 09 April 2005 09:04 |
those switches suk they always leak if u fit them in hose
i usually slide the temp thingy inbetween the radiator fins instead of the rad hose
u can buy these devices these days that u connect to power earth and one wire goes to the temperature gauge wire
and u adjust the device to read of the factory temp sensor for the gauge
u can adjust when fan cuts in
but they are like 150 bucks
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I am running a Davis Craig Thermo sender thingy in my MA61, I got mine for AUD$65.
I have driven 2,000kms on it and mine is not leaking. A forum member installed it as I wasn't familiar with the setup. The sender is setup where if the temp sits in the middle for too long the thermos come on when the temp still reads middle, thermostat opens and the temp drops to below the bar...
Cheers.
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I supported Toymods
Location:
I renounced punctuation
Registered:
May 2002
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Re: THERMOFAN CONVERSIONS BEWARE!!
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Sat, 09 April 2005 00:07
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The beauty of the catalogue is that it has all the specs there for your perusal. You also have the added security that you have purchased a new part. When you look through the catalogue you will see that there is a large range of temperatures over which the switches work. As Sideshow alluded, there are some that cut in at 50-60*C for overdrive control or for AC fans. I suppose what I wanted was one that turned the fans off at a temp just above the thermostat opening temp and turned them on at a temp maybe 10*C above the thermostat opening temp - I picked a 90 on 85 off, open, dual wire, M16 x 1.5 switch. It cost me $65.
I suppose the problems I have with the adjustable types are that it potentially is a leak point, you have to adjust it (so there's endless testing with a thermometer), it can easily go out of adjustment (one careless slip of the hand and it's gone unless you reference marked it) and it's just an inelegant solution - it doesn't look factory or tidy (IMHO).
Be careful with the Toyota ones - some switch at over 100 degrees (interestingly the 7M ones!). They also tend to be "closed" at below the cutoff temp such that you need to invert the signal (use an inverter relay) to operate the thermos at above the switching temp. No biggie but just an extra hassle.
It's all good - nice to see there are a multitude of ways to solve the problem.
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Location:
Melbourne
Registered:
May 2002
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Re: THERMOFAN CONVERSIONS BEWARE!!
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Sat, 09 April 2005 00:41
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just get a motec to run the fan 
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Location:
Brisbane northside
Registered:
May 2004
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Re: THERMOFAN CONVERSIONS BEWARE!!
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Sat, 09 April 2005 00:45
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I used a set temp thermoswitch to turn on my electric fan it was a pain having it on at highway speeds as the temp did not go down enough to turn it off so I wired in a microswitch with a flap soldered to the actuating lever and placed it in the airstream in front of the radiator. Now it turns off at 50ks and does not run unnecessarily at high speed.
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Location:
sunny coast, qld
Registered:
October 2002
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Re: THERMOFAN CONVERSIONS BEWARE!!
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Sat, 09 April 2005 01:37
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| Allan wrote on Sat, 09 April 2005 10:41 |
just get a motec to run the fan
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is this the best solution financially? 
I think all decent ECU's can control the thermos as my wolf can.
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Location:
sydney
Registered:
March 2003
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Re: THERMOFAN CONVERSIONS BEWARE!!
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Sat, 09 April 2005 02:03
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then after u get the motec to run the fan
get a digi 1 to run the engine
easily solved
easiest way is tridon cataloge many diff types to choose from
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Location:
Melbourne
Registered:
May 2002
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Re: THERMOFAN CONVERSIONS BEWARE!!
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Sat, 09 April 2005 02:16
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| ZZT231 wrote on Sat, 09 April 2005 09:18 |
| sideshow wrote on Sat, 09 April 2005 09:04 |
those switches suk they always leak if u fit them in hose
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I am running a Davis Craig Thermo sender thingy in my MA61, I got mine for AUD$65.
I have driven 2,000kms on it and mine is not leaking. A forum member installed it as I wasn't familiar with the setup. The sender is setup where if the temp sits in the middle for too long the thermos come on when the temp still reads middle, thermostat opens and the temp drops to below the bar...
Cheers.
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Im the sucker that installed this one, sometimes thay are the easyest soloution ($35 from repco) take care with the copper tube, use plenty of good silastic and let it cure for about 30min then start the car with the cap off to allow the heat to fully cure it - this typicly stops any leaks, but a propper thermo switch is allways a prefered option if your ecu does not have a output for a fan.
other cheapo options are thermal circit breakers from jaycar at about $5 each but this requires creative mounting.
P.S sideshow carefull installing it in the fins if a tube(s) is partly blocked or becomes so you can get cold spots i highly recomend it being in the water.
[Updated on: Sat, 09 April 2005 02:21]
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Location:
Melbourne
Registered:
May 2002
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Re: THERMOFAN CONVERSIONS BEWARE!!
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Sat, 09 April 2005 02:21
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If you worried about the price of the davis craig item, a NZ complany called ICE make the same thing for about half the price.
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I supported Toymods
Location:
I renounced punctuation
Registered:
May 2002
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Re: THERMOFAN CONVERSIONS BEWARE!!
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Sat, 09 April 2005 03:55
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| Allan wrote on Sat, 09 April 2005 10:41 |
just get a motec to run the fan
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Er....yes, well, um....that was solution number 2. Just type in the temperatures you want it to switch on and off.
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Location:
Brisbane
Registered:
June 2003
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Re: THERMOFAN CONVERSIONS BEWARE!!
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Sat, 09 April 2005 09:05
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the switch was DEFINITELY the one for the thermo fans on the camry, its identical to the older style bar colour and was the only one of such type fitted to the car.
Put it this way, with that switch, it keeps the motor a little below 1/2 on the sa63 gauge...
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Location:
Brisbane
Registered:
February 2003
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Re: THERMOFAN CONVERSIONS BEWARE!!
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Sat, 09 April 2005 09:13
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easy way to test what the switch is actually doing - dunk the sendor (all wired up and with an earth) into large container of boiling water - it should trigger the fan.
borrow your mum's cooking thermometer, leave it in the water a well, and when the fans turn off - check the thermo.
i have a smarmy digital cooking one that i use for testing temp sensors now - ranges up to 130 degree C.
note: some of the lower-temp switching items are used by the:
-heating & air-con systems to know what temp the heating water is at (if the coolant is cold, then it wont expect hot air from it when doing climate control)
-auto transmission ecu, to not engage over-drive or TC lockup until engine/box is warmed up
-ecu to disable performance boosting things vvt, etc until engine is warmed up
cheers,
charles.
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Location:
Brisbane
Registered:
June 2003
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Re: THERMOFAN CONVERSIONS BEWARE!!
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Sat, 09 April 2005 09:16
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thats what i mean tho..it was the only one on the car wich looked relevant  same plug and all...
ill drive it round for a coupla days and see how the temp goes
if its too cold ill look at something different like aforementioned
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Location:
Adelaide
Registered:
May 2003
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Re: THERMOFAN CONVERSIONS BEWARE!!
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Sat, 09 April 2005 10:50
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bah, just wire it up to ign power. much better.
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Location:
Rocklea qld
Registered:
February 2003
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Re: THERMOFAN CONVERSIONS BEWARE!!
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Sun, 10 April 2005 05:55
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u get different variances because the sendors are in different places of the engines and also they run at different temperatures.
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Location:
Lost in the K hole
Registered:
May 2002
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Re: THERMOFAN CONVERSIONS BEWARE!!
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Sun, 10 April 2005 13:12
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| V8_MA61 wrote on Sat, 09 April 2005 19:16 |
ill drive it round for a coupla days and see how the temp goes
if its too cold ill look at something different like aforementioned
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like a thermostat??
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Membership Secretary
Location:
Sydney
Registered:
June 2002
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Re: THERMOFAN CONVERSIONS BEWARE!!
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Sun, 10 April 2005 23:09
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I to was running a repco bulb type set up. Cost $45 and was great did the job quite well. I sealed it in with silicon and had no problems there.
However ans GT said its not very cosmetic didn't look factory or really that nice overall.
I think with my new rad I will be looking at going thru the tridon catoluge.
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Location:
BRAY PARK BRISBANE
Registered:
March 2005
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Re: THERMOFAN CONVERSIONS BEWARE!!
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Sun, 10 April 2005 23:21
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if you run the copper tube into the underside of your top radiator hose then under the lip of the top tank, around the side, then mount the control box under the radiator suport pannel, drill a small hole in the pannel and poke the adjuster nob through it then it is 99% invisible...
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Location:
Brisbane northside
Registered:
May 2004
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