 Oil Temp Sensor, how does it work? |
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| billd |
 Nov 3 2005, 03:14 PM
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#1
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Member  Group: Members Posts: 327 Joined: 25-May 05 From: Palo Alto, CA Member No.: 4,145  |
My temperature gauge is inoperative and I'd like to debug it by starting with the sensor. What is the sensor supposed to do? Is it a thermistor or a thermocouple? If its a thermistor, what is its resistance supposed to be at room temperature and operating temperature? If its a thermocouple, what is its output voltage supposed to be?
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| lapuwali |
Nov 3 2005, 03:22 PM
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Not another one! Group: Benefactors Posts: 4,526 Joined: 1-March 04 From: San Mateo, CA Member No.: 1,743  |
Assuming you're talking about the stock sensor in the taco plate on later engines, it's an NTC thermistor, with resistance going DOWN as the temperature goes UP. If the sensor has failed, it will usually show a fixed resistance or be open (infinite resistance), so you can check it easily enough w/o knowing the correct resistance values (which I'd tell you if I knew them).
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