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Radiator Sensor?

savage1987

By savage1987,
in Engines & Forced Induction

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savage1987 Contributor

savage1987

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Our GTST has a sensor in the bottom of the radiator that has a plug on it that looks like this

DSC00411.JPG

I can only find ref. to this sensor with respect to the GTR models, should it be plugged into anything on a GTST?

Thanks,

Sam

Edited by savage1987
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savage1987 Contributor

savage1987

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That's the thing.. I have had a quick look around and can't see a plug for it anywhere. The temp gauge in the dashboard works fine, but I think that's fed by the manifold coolant temp sensor...(?) Unless this one feeds the ECU .. that'd explain why the thing seems to enjoy 14L/100km :(

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GTSBoy Grand Master

GTSBoy

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The ECU temp sensor is on the alloy coolant pipe out of the head in front of the inlet manifold. Single spade connector and single wire stickign up. See this thread for further VERY recent and searchable thoughts on the radiator sensor. http://www.skylinesaustralia.com/forums/topic/396808-radiator-thermo-sensor-question/

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savage1987 Contributor

savage1987

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The ECU temp sensor is on the alloy coolant pipe out of the head in front of the inlet manifold. Single spade connector and single wire stickign up. See this thread for further VERY recent and searchable thoughts on the radiator sensor. http://www.skylinesa...ensor-question/

Yeah thanks champ, I see what you did there with the hint that I should have used the search function that never ever works properly on any forum...

That thread still doesn't tell me what that sensor actually does, all I have to go on at the moment is guesswork and wishy thinking.

Sam

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blind_elk Grand Master

blind_elk

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Didn't you read Moodles2's post? Tells you right there that the sensor turns on the A/C fan (in front of the A/C radiator) in overtemp situations.

GTSBoy - the single spade temp sensor is for the gauge, the ECU reads off the 2-pin sensor.

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savage1987 Contributor

savage1987

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Didn't you read Moodles2's post? Tells you right there that the sensor turns on the A/C fan (in front of the A/C radiator) in overtemp situations.

GTSBoy - the single spade temp sensor is for the gauge, the ECU reads off the 2-pin sensor.

I did read it. "... generally means ... " is not a 100% answer :P

but it seems to line up.

Anyway I found the plug for it this morning, jammed between radiator and A/C condenser and full of black scunge.. gave it a quick clean up with some elec contact cleaner and plugged it up. Maybe that fan will work now :)

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GTSBoy Grand Master

GTSBoy

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GTSBoy - the single spade temp sensor is for the gauge, the ECU reads off the 2-pin sensor.

True, true. Brain fade right there. I was only playing with that (single pin) sensor a couple of weeks ago when doing the engine transplant to make sure that the R32 gauge would work correctly (just in case there was any difference between 20 and Neo sensor resistances - still haven't gotten around to testing if they're the same or not either).

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GTSBoy Grand Master

GTSBoy

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And.... this afternoon I found out why my sensor's wire has been hanging for years. I found the other connector all hooked up to a relay tucked down between the battery and headlight. It seems that between me, my mechanic and possibly the guy who does a lot of the wiring in his shop we did something about ten years ago to it, and we can't remember why. Might have been at the time we did the auto-manual conversion. Vague memory is vague.

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