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*****UPDATE....Temp gauge not working and Check Engine Light on...UPDATE. Please read last post!!!*******
Ok......2006 LaCrosse/ 3.8L/80,000miles.
Today I noticed that the temp gauge stayed all the way cool and the check engine light came on. I looked at the two wire sensor under the thermostat housing and checked 0V on one wire and 1.55 V on the other when connected. When disconnected I had 4.65 V on one wire and 0V on the other. The resistance was 290 ohms across both wires going to the sensor. I assumed there was only one temp sensor feeding both the computer and gauge? Is this right?
What do you all think? Sensor bad? Is there an easy check to see if the sensor is bad? I have tried to find some scale showing me the resistance/deg F nut no luck.
Anyway....thanks guys
Last edited by Homeby51; 06-13-2018 at 10:26 AM.
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