 two wire plug on radiator |
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 Jun 18, 2011 - 7:30 AM
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 Enthusiast  Joined May 13, '06 From Kaimuki, HI Currently Offline Reputation: 10 (100%)  |
So I was under my car doing something early this week and I noticed a two wire sensor on the bottom of the radiator. I've never noticed it before. It's an odd place for a water temp sending unit because the water would be cooler in this part of it's cycle, so I don't think it's a water temp sending unit. Sending units are usually on the water outlet side of the engine with the rad fan switch and whatever else. Anyone know what this is?
-------------------- -Jay
95 GT conv. project car: Manual, Gen III 3sgte, JN pisons, Eagle rods, overbore, crank knife-edged, crank scraper, ARP head/main/flywheel, Autronic EMS, Haltech Dual Wideband O2 controller, Audi 1.8T individual coils, FMIC and SSQV BOV, 3" downpipe, 3" ultra-high-flow cat, 2.5" Borla muffler, +other 01 S2000: FMIC, Haltech EMS, Haltech wideband, 570cc inj, forged pistons/rods, sleeved block, 5 angle valve job, ported and polished 02 R6, all stock, except for braided stainless brake lines, frame sliders, and adjustable brake/clutch leve |
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Jun 18, 2011 - 9:52 AM
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 Moderator Joined Oct 1, '02 From fall river, ma Currently Offline Reputation: 13 (100%) |
its a temp switch for the fans.
-------------------- Former Team 5SFTE pro member ;)
 13.6@108MPH, 5SFTE Powered |
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Jun 18, 2011 - 1:39 PM
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Enthusiast Joined May 13, '06 From Kaimuki, HI Currently Offline Reputation: 10 (100%) |
QUOTE (presure2 @ Jun 18, 2011 - 4:52 AM)  its a temp switch for the fans. ok, so what are the other two sensors on the water outlet side of the block? I always thought that the one pin sensor was the fan switch, and the two pin sensor was is a temp sending unit. -------------------- -Jay
95 GT conv. project car: Manual, Gen III 3sgte, JN pisons, Eagle rods, overbore, crank knife-edged, crank scraper, ARP head/main/flywheel, Autronic EMS, Haltech Dual Wideband O2 controller, Audi 1.8T individual coils, FMIC and SSQV BOV, 3" downpipe, 3" ultra-high-flow cat, 2.5" Borla muffler, +other 01 S2000: FMIC, Haltech EMS, Haltech wideband, 570cc inj, forged pistons/rods, sleeved block, 5 angle valve job, ported and polished 02 R6, all stock, except for braided stainless brake lines, frame sliders, and adjustable brake/clutch leve |
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Jun 26, 2011 - 8:30 AM
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Moderator Joined Oct 1, '02 From fall river, ma Currently Offline Reputation: 13 (100%) |
QUOTE (match220 @ Jun 18, 2011 - 2:39 PM) QUOTE (presure2 @ Jun 18, 2011 - 4:52 AM) its a temp switch for the fans. ok, so what are the other two sensors on the water outlet side of the block? I always thought that the one pin sensor was the fan switch, and the two pin sensor was is a temp sending unit. one is for the dash gauge, the other is for the ECU. -------------------- Former Team 5SFTE pro member ;)
13.6@108MPH, 5SFTE Powered |
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Jun 30, 2011 - 11:30 AM
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 Enthusiast Joined Mar 22, '07 From Houston, TX Currently Offline Reputation: 4 (100%) |
he is right
(for a GT.) the 2 pin in the rad is for your fans the 2 pin on the water neck is for your ecu the 1 pin on the water neck is for your gauge (for an ST) the 2 pin on the water neck is for youe ecu the 1 pin on the water neck is the fan switch the 1 pin on the water pump exit pipe is for your gauge -------------------- 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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Jun 30, 2011 - 2:19 PM
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Enthusiast Joined May 13, '06 From Kaimuki, HI Currently Offline Reputation: 10 (100%) |
QUOTE (stephen_lee @ Jun 30, 2011 - 6:30 AM) he is right (for a GT.) the 2 pin in the rad is for your fans the 2 pin on the water neck is for your ecu the 1 pin on the water neck is for your gauge (for an ST) the 2 pin on the water neck is for youe ecu the 1 pin on the water neck is the fan switch the 1 pin on the water pump exit pipe is for your gauge thanks a lot man, whne I found the one on the rad I thought I had wired something wrong into the Autronic. I couldn't find a good wire diagram so I had wired everything in thinking the two pin on the water neck was from the ecu for temp, and the 1 pin on the water neck was the fan switch for the radiator. Turns out, everything is wired right after all. The one I thought was for the fan switch is for the gauge, and I can leave the one on the radiator untouched. -------------------- -Jay
95 GT conv. project car: Manual, Gen III 3sgte, JN pisons, Eagle rods, overbore, crank knife-edged, crank scraper, ARP head/main/flywheel, Autronic EMS, Haltech Dual Wideband O2 controller, Audi 1.8T individual coils, FMIC and SSQV BOV, 3" downpipe, 3" ultra-high-flow cat, 2.5" Borla muffler, +other 01 S2000: FMIC, Haltech EMS, Haltech wideband, 570cc inj, forged pistons/rods, sleeved block, 5 angle valve job, ported and polished 02 R6, all stock, except for braided stainless brake lines, frame sliders, and adjustable brake/clutch leve |
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Jun 30, 2011 - 3:33 PM
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Enthusiast Joined Mar 22, '07 From Houston, TX Currently Offline Reputation: 4 (100%) |
no problem. glad to help!
-------------------- 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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