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Old 08-15-2008, 06:48 PM   #1 (permalink)
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Coolant Temperature sensor sending unit

On a 1993 22RE, where is the coolant temperature sensor?? After reading Haynes, FSM, and online searches, I can't find it.

Keywords: CTS, ECT sensor, Coolant Temperature Sensor

EDIT:

After much soul searching, it appears that the Engine Coolant Temperature (ECT) Sensor is attached to the green connector below.

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Last edited by sevitzky; 08-24-2008 at 06:02 AM. Reason: photo, remove agro comments
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Old 08-15-2008, 10:59 PM   #2 (permalink)
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temp sensor on 90 22re?
coolant temperature sensor
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Old 08-16-2008, 07:28 AM   #3 (permalink)
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THANKS, DubVipers (I swear I did multiple searches)


Does anyone know how to test this according to the FSM, which specifies decreasing resistance as temperature increases? Specifically, how do you measure the temperature? (No #'s on my dash temp gauge) Or do you just start the vehicle and watch the resistance dec. as it warms up?



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Old 08-24-2008, 01:59 AM   #4 (permalink)
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its the green one, take it out and stick it in cold water and measure with a volt meter on ohms setting., should read high ohms in cold and low ohms in hot water. low being 0.2 high being 1400. hope this helps.
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Old 08-24-2008, 06:07 AM   #5 (permalink)
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Thanks, that helps.

It would be easier to take it out and test it, duh. I thought I had to test the unit by running the engine and measuring the heat in the radiator...
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Old 07-15-2012, 10:36 AM   #6 (permalink)
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I needed this BAD! Thank You.
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Old 07-17-2012, 11:52 PM   #7 (permalink)
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Keep in mind that the discussed sensor is the one that reports to the computer, not the gauge.
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