If It is the temp. sensor and not the thermosat I believe it is the bottom of the coolant tank. I thimk you have to buy a new tank.
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.
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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.
Vehicle make, model & engine size needed first.
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.
How much should it cost to replace engine mounts on a 1997 audia4 quattro
You will have to replace the refrigerant, but not the engine coolant.
NOTE: this answer is describing the location of the engine coolant temperature sensor - NOT the coolant sensor in the reservoir that warns when the level gets too low.The coolant temperature sensor is located directly adjacent to the thermostat housing. The thermostat housing is what the upper radiator hose (toward the right side of the engine compartment) connects to. You do not have to replace the reservoir to replace this part, but leaky coolant reservoirs are a common problem on this model.
G2 Engine Coolant Temperature (ECT) SensorG2 Engine Coolant Temperature (ECT) SensorG32 Engine Coolant Level (ECL) SensorG32 Engine Coolant Level (ECL) SensorG32 Engine Coolant Level (ECL) Sensor
wher is the engine temperature coolant sensor BUICK 2001
You could look here:http://www.lovehorsepower.com/SubaruDocs/CoolantTempSensor.htmlThis page shows the coolant sensor and how to replace it.'95 Subbie and '97 should be similar.
Replace the engine coolant temperature sensor. Your car has two, replace the one with the 2 wire connector