Electric Fan Controller Temp. question

btwilson86 · 01-26-2008, 08:17 PM

And here's the original link... had an extra "http" in it:

MK3 TEWD On-Line

Pretaco · 01-27-2008, 03:29 AM

So I can't link stuff!
Its the thought that counts!
Thanks for clearing that up though.
Ray.

SilenceboneSupra · 01-28-2008, 03:02 AM

well if on the EWD page is right then the controller is no use to me!
the temp on the page is between 104F - 140F and the controller can only be set between 160F - 230F or am i assuming something wrong here??
correct me if im wrong please
please do remember that the car has a 7m-ge engine

Pretaco · 01-28-2008, 04:52 AM

The temps on the page say "on" at 212°F, and "off" at 203°F.

It doesn't matter what engine you have, just that the only supra that had the electric fan from the factory was the auto tranny turbo car. (Engine coolant temp fan.)

The 104-140° is for a different water temp sensor, I think it has something to do with the heater. I just can't figure out exactly what.
Ray.

SilenceboneSupra · 01-28-2008, 08:26 AM

isnt that a little bit to hot, ive been working on cummins engines which are big v16 twin turbo engines with 1800hp at 1800rpm they are not to go higher then 2000rpm and they cant get hotter then 194F otherwise its ECU does a emergency shutdown on the engine.....
at those on the page the water would be almost boiling at that temp....

Pretaco · 01-28-2008, 02:40 PM

Not too hot, the gas engines run much hotter then a diesel.
Also at 15psi pressure in the cooling system, it can go up to 230° before boiling, each pound of pressure adds 1 degree to the boiling point. That is also tested at the thermostat housing on the outlet side of the engine, where the coolant is the hottest.

SilenceboneSupra · 01-29-2008, 05:51 AM

allright then thanks for all the replies i will chek them out see what suits best for the engine

batmmannn · 06-12-2010, 01:18 AM

I have 2 1987 NA Supras and they both have a stock electric fan unless you were talking more than one electric fan on a car. My fan is not working I think I need a new fan relay. My car is getting hot and losing fluid out of the overflow tank, I already replaced the thermostat and radiator cap. I can drive it an hour and it will lose 2 cups of fluid. No sign of a blown head gasket. It was over 80 degrees today.

What do you guys think my problem might be? My clutch fan is good unless I have a blockage in the radiator or simply I need my fan to be running .

Also I don't have my compressor belt on but that would not effect my fan running, possibly the heat sensor for the fan? I hooked my fan up directly and it ran just fine so I am thinking it is the relay since my car sat for 7 years.

How do you test the fan relay and sensor? Thanks

Green7mgte · 06-12-2010, 03:49 AM

those two fans on the side of your radaitor are for the AC condenser. pretty sure there was a post discussing this about a week ago.

http://www.toyota-supra.info/forums/...-fans-for.html

batmmannn · 06-16-2010, 07:40 PM

Well I have swapped out my fan relay assembly and what I think might have been wrong with my car was that the clip on the overflow bottle that attaches to the radiator was loose and sucking air. My car now draws in the fluid from the radiator overflow bottle and then expels it to the same amount during cool down. I still have no fan but I am not sure my car has gotten to the point temperature of turning it on.

I hooked up my AC belt just in case but the AC compressor is seized it ate the belt right off.

I am doing this bypass wiring on my fan and installing a switch in the cockpit.

Here is a great link on how that is done.

http://www.clickdesign.co.uk/supradu..._override.html

01-26-2008, 08:17 PM	#1
btwilson86 Super Moderator Join Date: May 2007 Location: Billings, Montana Posts: 1,034	And here's the original link... had an extra "http" in it: MK3 TEWD On-Line __________________ 1989 7MGTE R154 Targa Top White Package w/Blue Interior Driftmotion 57trim CT26, Upgraded Intercooler, 2.25" Hard Pipes, 3" Turbo Back Exhaust with Test Pipe, HKS VPC w/GM 3 bar MAP sensor, APEXi S-AFC, Walbro 255lph fuel pump, ProSport EVO Series Boost / Fuel Pressure / AFR gauges, Lotek a Pillar Gauge Pod, HKS Type 0 Turbo Timer, Eibach Lowering Springs, Tokico Illumina II TEMS struts, custom powder coated Motegi Racing TrakLite wheels

01-27-2008, 03:29 AM	#2
Pretaco 3" Exhaust Join Date: Dec 2007 Location: Glendale, AZ Posts: 126	So I can't link stuff! Its the thought that counts! Thanks for clearing that up though. Ray. __________________ '88 Supra Targa 5 speed w/ '90 7M-GTE Currently Running Good For Sale: Light blue body parts, Blue interior parts all from '90 supra targa turbo manual. Also for sale: R154 trans, brake pedal, master cylinder, booster, abs actuator, sensors, abs ecu, driveshaft, 3.90 lsd rear end, radiator, wiring, speedo cable, 8 saw blade wheels, '88 ecu, relays, cruise control actuator (bad cable), empty fuel tank, etc....

01-28-2008, 03:02 AM	#3
SilenceboneSupra 3" Exhaust Join Date: Oct 2007 Location: Aruba Posts: 113	well if on the EWD page is right then the controller is no use to me! the temp on the page is between 104F - 140F and the controller can only be set between 160F - 230F or am i assuming something wrong here?? correct me if im wrong please please do remember that the car has a 7m-ge engine Last edited by SilenceboneSupra; 01-28-2008 at 03:55 AM.

01-28-2008, 04:52 AM	#4
Pretaco 3" Exhaust Join Date: Dec 2007 Location: Glendale, AZ Posts: 126	The temps on the page say "on" at 212°F, and "off" at 203°F. It doesn't matter what engine you have, just that the only supra that had the electric fan from the factory was the auto tranny turbo car. (Engine coolant temp fan.) The 104-140° is for a different water temp sensor, I think it has something to do with the heater. I just can't figure out exactly what. Ray. __________________ '88 Supra Targa 5 speed w/ '90 7M-GTE Currently Running Good For Sale: Light blue body parts, Blue interior parts all from '90 supra targa turbo manual. Also for sale: R154 trans, brake pedal, master cylinder, booster, abs actuator, sensors, abs ecu, driveshaft, 3.90 lsd rear end, radiator, wiring, speedo cable, 8 saw blade wheels, '88 ecu, relays, cruise control actuator (bad cable), empty fuel tank, etc....

01-28-2008, 02:40 PM	#6
Pretaco 3" Exhaust Join Date: Dec 2007 Location: Glendale, AZ Posts: 126	Not too hot, the gas engines run much hotter then a diesel. Also at 15psi pressure in the cooling system, it can go up to 230° before boiling, each pound of pressure adds 1 degree to the boiling point. That is also tested at the thermostat housing on the outlet side of the engine, where the coolant is the hottest. __________________ '88 Supra Targa 5 speed w/ '90 7M-GTE Currently Running Good For Sale: Light blue body parts, Blue interior parts all from '90 supra targa turbo manual. Also for sale: R154 trans, brake pedal, master cylinder, booster, abs actuator, sensors, abs ecu, driveshaft, 3.90 lsd rear end, radiator, wiring, speedo cable, 8 saw blade wheels, '88 ecu, relays, cruise control actuator (bad cable), empty fuel tank, etc....

01-28-2008, 08:26 AM	#5
SilenceboneSupra 3" Exhaust Join Date: Oct 2007 Location: Aruba Posts: 113	isnt that a little bit to hot, ive been working on cummins engines which are big v16 twin turbo engines with 1800hp at 1800rpm they are not to go higher then 2000rpm and they cant get hotter then 194F otherwise its ECU does a emergency shutdown on the engine..... at those on the page the water would be almost boiling at that temp....

01-29-2008, 05:51 AM	#7
SilenceboneSupra 3" Exhaust Join Date: Oct 2007 Location: Aruba Posts: 113	allright then thanks for all the replies i will chek them out see what suits best for the engine

06-12-2010, 01:18 AM	#8
batmmannn 12psi boost Join Date: May 2010 Location: West Virginia Posts: 320	I disagree I have 2 1987 NA Supras and they both have a stock electric fan unless you were talking more than one electric fan on a car. My fan is not working I think I need a new fan relay. My car is getting hot and losing fluid out of the overflow tank, I already replaced the thermostat and radiator cap. I can drive it an hour and it will lose 2 cups of fluid. No sign of a blown head gasket. It was over 80 degrees today. What do you guys think my problem might be? My clutch fan is good unless I have a blockage in the radiator or simply I need my fan to be running . Also I don't have my compressor belt on but that would not effect my fan running, possibly the heat sensor for the fan? I hooked my fan up directly and it ran just fine so I am thinking it is the relay since my car sat for 7 years. How do you test the fan relay and sensor? Thanks __________________ 1987 N/A 7MGE Left Hand Drive MK3 Red 5 Speed and Black Auto Supras My Next project is the Batmobile! Last edited by batmmannn; 06-12-2010 at 04:25 AM.

06-12-2010, 03:49 AM	#9
Green7mgte Supra Forum Moderator Join Date: Nov 2009 Location: Green-Ohio Posts: 1,297	those two fans on the side of your radaitor are for the AC condenser. pretty sure there was a post discussing this about a week ago. http://www.toyota-supra.info/forums/...-fans-for.html __________________ 92 Ma71 7mGTE Auto. SafcII Supra FAQ Supra MKIII FAQ Classified Section guidelines :

06-16-2010, 07:40 PM	#10
batmmannn 12psi boost Join Date: May 2010 Location: West Virginia Posts: 320	Still No Fan to Fan Override Well I have swapped out my fan relay assembly and what I think might have been wrong with my car was that the clip on the overflow bottle that attaches to the radiator was loose and sucking air. My car now draws in the fluid from the radiator overflow bottle and then expels it to the same amount during cool down. I still have no fan but I am not sure my car has gotten to the point temperature of turning it on. I hooked up my AC belt just in case but the AC compressor is seized it ate the belt right off. I am doing this bypass wiring on my fan and installing a switch in the cockpit. Here is a great link on how that is done. http://www.clickdesign.co.uk/supradu..._override.html __________________ 1987 N/A 7MGE Left Hand Drive MK3 Red 5 Speed and Black Auto Supras My Next project is the Batmobile!

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