 Temp Fan Switch, Intermittent |
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 Mar 30, 2015 - 2:55 PM
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Enthusiast Joined Jan 2, '15 From Philippines Currently Offline Reputation: 0 (0%)  |
As the title suggests - my temp fan switch sometimes does not work, it acts up randomly in no particular event/order. Fans does come on when it's unplugged and as a temporary solution I've made a bypass
switch so I can turn on my fans whenever my temp starts to go up. Right now, I'm on the process of replacing my tstat and gonna flush the coolant and was wondering if I should order a new temp fan switch. Btw, I have a 3sge motor and fan switch is located on the radiator. Thanks! |
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Mar 31, 2015 - 12:42 PM
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 Enthusiast  Joined Dec 3, '13 From Missourah Currently Offline Reputation: 0 (0%) |
If they don't come on when you unplug the switch I would take a look at the fan relay first
-------------------- Bust a Deal; Face the Wheel.
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Mar 31, 2015 - 1:39 PM
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Enthusiast Joined Oct 25, '12 From Pennsylvania Currently Offline Reputation: 0 (0%) |
My fans were running all of the time between 2013-2014. I replaced the switch located on the bottom of the radiator, and all three fan relays. They still ran all the time. I kept on unplugged through the winter, but it was still tough to get the engine temp up. They suddenly starting working properly around August 2014. I didn't do anything, but they work fine now. Gremlins I guess......
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Mar 31, 2015 - 7:50 PM
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Enthusiast Joined Dec 3, '13 From Missourah Currently Offline Reputation: 0 (0%) |
sounds like a bad connection somewhere.
-------------------- Bust a Deal; Face the Wheel.
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Mar 31, 2015 - 9:15 PM
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Enthusiast Joined Dec 8, '03 From Lancaster CA Currently Offline Reputation: 6 (100%) |
there is also a pressure switch on the AC line. the switches are normally closed. when conditions exist, they open which grounds the relays turning on the fans
-------------------- 2001 Celica GT-S Turbo
1997 Supra TT 6speed 1997 Celica 3MZ/1MZ swap 1990 Celica All-Trac |
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