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Replace the engine coolant temperature sensor. Your car has two, replace the one with the 2 wire connector
coolant temperature sensor are located where the coolant runs in the block near the thermostat housing normally the connector are on top of the sensor and the sensor itself screws in with a deep socket. The temperature sensor is usaully located where the coolant runs OUT of the engine close to thermostat housing.
Replace your Engine Coolant Temperature Sensor. Your car has two, replace the one with the two wire connector
The coolant temperature sensor can be found on the front of the engine, near the thermostat. Remove the coolant temperature sensor retaining nut, to replace it.
the coolant temp sensor( cts) reads the temp of the engine and adjust the fuel air mixture depending on the temp. if its cold out the sensor will adjust for more fuel to ease the start of the engine. ADDITIONAL: The Coolant Temperature Sensor measures the temp of the coolant, not the engine. The sensor controls the thermo fans on/off. depending upon temperature. The actual engine temperature sensor is on top of the engine and does not control the fans. If the fans do not switch on at any temperature, disconnect the 2 wire connector from the sensor (Usually at the bottom of the radiator) If fans start up with connector disconnected, replace the sensor.
Follow the upper radiator hose to the thermostat housing. The coolant temperature sensor for the ECU (2-pin connector) is on the driver's side. The temperature sender for the guage (1-pin connector. is on the opposite side.
Unplug electric connector. Sensor is in water jacket so you will need to catch coolant after removing sensor. Properly dispose of old coolant. Install new sensor and just make a little snug (with open-end wrench)- do NOT over tighten. Install electric connector and top off coolant.
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The engine coolant temperature sensor is usually on the front of the engine. The coolant temperature sensor will be in the vicinity of the thermostat housing.
Purchase a "pig tail" from the dealer and splice it in.
Vehicle make, model & engine size needed first.
You should see a two-wire connector just to the right and underneath the coolant cap on the passenger side of the engine. That is the coolant temperature sensor. NOTE: look for the cap on the engine, not the one on the radiator.