yes but i found out if you tap into the wires on the cooling fan it keeps you running cooler and keeps your car running smooth
The coolant temperature sensor on a 1999 Mondeo is located on top of the engine, in the intake manifold. It constantly updates the vehicle's computer and controls the cooling fan.
The engine coolant temperature sensor is the two wire sensor near where the upper radiator hose attaches to the engine.
PATH: Engine Cooling > Coolant Temperature Sensor > Removal & Installation Removal & Installation Drain the engine cooling system slightly. Disconnect the negative battery cable. Detach the wiring connection from the sensor. Remove the coolant temperature sensor from the intake manifold. Clean the sensor area of any debris. To install: Install a new sensor into the intake manifold. Tighten the 6-14 ft. lbs. (8-19 Nm). Attach the sensor wiring to the unit. Connect the negative battery cable. Fill the engine cooling system with a 50/50 coolant water mixture. Start the engine and top off the cooling system.
The coolant temperature sensor on a 1989 Ford I6 4.9L engine is located on top of the engine, in the intake manifold. It notifies the engine when to turn on the cooling fan.
That would be a sensor that measures the temperature of the coolant and sends that information to the Engine Control Module (ECM). The ECM takes that info along with information from many other sensors and controls the engine to run at peak performance during the drive cycle.
There is a sensor located at the bottom of the coolant reservoir.
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.
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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.
There is not a separate cooling fan sensor, it controlled by the ECM which get it's reading from the ECT (engine coolant temp sensor)
You will have to do a little troubleshooting to find out what the real issue is here. A scan tool that can read the coolant temperature may help, as it will show you what the engine computer is reading from the sensor. This is important because the computer controls the cooling fans through 3 relays, so that they turn on at the appropriate time. But if you see the temperature gauge changing once the engine starts to warm up, then the temperature sensor is probably working, as the computer also controls that gauge. I have provided a link that gives more details about the engine cooling fans and how they should work. Good Luck, Greg
The coolant temperature sensor on a Subaru is located on top of the engine near the upper radiator hose. It constantly updates the vehicles computer to regulate the speed of the cooling fan.