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?
-Jay95 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, +other01 S2000: FMIC, Haltech EMS, Haltech wideband, 570cc inj, forged pistons/rods, sleeved block, 5 angle valve job, ported and polished02 R6, all stock, except for braided stainless brake lines, frame sliders, and adjustable brake/clutch leve
its a temp switch for the fans.
Former Team 5SFTE pro member ;)13.6@108MPH, 5SFTE Powered
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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.
-Jay95 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, +other01 S2000: FMIC, Haltech EMS, Haltech wideband, 570cc inj, forged pistons/rods, sleeved block, 5 angle valve job, ported and polished02 R6, all stock, except for braided stainless brake lines, frame sliders, and adjustable brake/clutch leve
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QUOTE (match220 @ Jun 18, 2011 - 2:39 PM)
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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
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." -DEATH1994 GT:V6 swap, 5speed E53 W/ LSD, All Power, now RED1995 ST:SOLD @273k miles, Auto, all power, CarPC, White1994 ST:Totaled, 5spd, all power, RedRIP 07/09/09 @ 241,8101994 Lexus LS400:This is my new DD
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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.
-Jay95 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, +other01 S2000: FMIC, Haltech EMS, Haltech wideband, 570cc inj, forged pistons/rods, sleeved block, 5 angle valve job, ported and polished02 R6, all stock, except for braided stainless brake lines, frame sliders, and adjustable brake/clutch leve
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." -DEATH1994 GT:V6 swap, 5speed E53 W/ LSD, All Power, now RED1995 ST:SOLD @273k miles, Auto, all power, CarPC, White1994 ST:Totaled, 5spd, all power, RedRIP 07/09/09 @ 241,8101994 Lexus LS400:This is my new DD
