Check engine light came on. Jeep is running great. Had local parts store run a diagnostic check and he said the code came back as a Engine Coolant Sensor problem. He told me to put coolant in the Jeep and see if the check engine light goes out. I put new coolant in, it was very low, but the light is still on. I'm thinking I should replace the ect sensor itself if I can locate it. Where is it located and am I going about this issue all wrong?
Please follow the link and scrool down to the 3.7 https://www.autozone.com/repairguides/Liberty-Wrangler-2006-2007/Coolant-Temperature-Sensor/Removal-Installation/_/P-0996b43f8075ae3c#hd1-1-3
SOURCE: location of the coolant temperature sensor
You will find this sensor where the fat hos comes from the radiator and conects to the engine block. It would be on the housing where the thermostat is located. If it is not there you should look for a sensor that has a wire connected to it anywhere on the engine block where a water inlet is located. I hope this helps. Don't forget to rate my answer, thanks.
SOURCE: ECTS location
The sensor is on the left side of the engine between cyl 2 & 3. It can be removed using a deep socket or a ratcheting box end wrench. It is a pain but can be done.
SOURCE: Temp sensor needs to be replaced
this does not mean the sensor is defective, it most likely means the engine thermostat is stuck open and the engine is not running hot enough to satisfy the computers preset temp requirements for minimum eng operating temp.
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