 Radiator Fans |
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 Oct 4, 2011 - 3:10 PM
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Enthusiast  Joined Jun 30, '05 From Chattanooga, TN Currently Offline Reputation: 5 (100%)  |
I installed a new radiator and fans. The fans will not kick on automatically anymore. i tested them straight from the battery and they work fine. There is a sensor of some type in the bottom of the radiator, im guessing this is the temperature switcth to kick on the fans since its running to some relays that run to the fans. if i cut the wires to the sensor and twist them together will this cause my fans to run all the time? any thoughts on troubleshooting this? there wasnt much slack for the sensor wires, so i think i may have broken one when it pulled tight.
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Oct 4, 2011 - 3:42 PM
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Enthusiast Joined Jun 30, '05 From Chattanooga, TN Currently Offline Reputation: 5 (100%) |
If anyone was wondering, cutting the wires will set the fans to on all the time. Im sure this isnt good for some reason, so i will order a new temperature switch and get it going normal again.
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Oct 4, 2011 - 4:24 PM
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 Enthusiast Joined Nov 15, '10 From Austria Currently Offline Reputation: 1 (100%) |
Hi,
closed circuit = no fans open circuit = fans run just disconect the temp.switch to run them greetz -------------------- KEEP COOL UNDER PRESSURE
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Oct 12, 2011 - 12:47 PM
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Enthusiast Joined Apr 11, '09 Currently Offline Reputation: 11 (100%) |
well what if you pull that temp switch and they dont kick on? I know they work tho because i ran them to the battery and they worked. so then i tried pulling the temp switch and they will not kick on
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Oct 12, 2011 - 1:29 PM
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 Enthusiast Joined Mar 22, '07 From Houston, TX Currently Offline Reputation: 4 (100%) |
cooling fan relay, or a fuse. try the CDI fuse i believe it is
-------------------- QUOTE "And, as always, your friendship, help, and dedication to the advancement of Texas Celica dominance is GREATLY appreciated. Thanks bro." -DEATH 1994 GT: V6 swap, 5speed E53 W/ LSD, All Power, now RED 1995 ST: SOLD @273k miles, Auto, all power, CarPC, White 1994 ST: Totaled, 5spd, all power, Red RIP 07/09/09 @ 241,810 1994 Lexus LS400: This is my new DD |
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Oct 16, 2011 - 6:06 AM
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Enthusiast Joined Mar 3, '05 From Richmond, B.C. Currently Offline Reputation: 0 (0%) |
Toyota typically sets their fans up as failsafe -- the sensor interrupts the circuit if temperatures are low, so if it fails the fans would kick on. Failure to run at all when connected through the harness suggests to me what it does to Stephen, fuse/relay failure.
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