cosmeticsqert.blogg.se - 2002 ford f150 4.6 coolant temp sensor location

It is only important to have at hand a multimeter for measuring voltages (although it is not necessary to know this indicator for initial assessment) and resistances, as well as any device for measuring temperature. What’s very good is that modern ones make it possible to check almost at home.

There’s black smoke coming out of the silencer tube.

When the car starts up and the engine reaches its maximum temperature, it dies.

The vehicle is now consuming more fuel than usual.

If you have a mechanic, not a computer control system, here are the signals that you need to buy a new coolant temperature sensor: If your car has computer control, the problem can be detected byĭepending on the year of manufacture of the car, as well as its brand, many car enthusiasts note the increase in fuel consumption at the engine. Other systems in your car, the dashboard will report a malfunction with a light Of ways you can find out what you need to change the sensor. For the most correct operation of the alarm system you should use coolant recommended for a certain time of year, it is expensive, but prolongs the life of your car. These are the air temperature outside the vehicle and various drive characteristics. The resistance of the coolant sensor is very dependent on external factors. To make adjustments to the engine drives, i.e. Temperature and then (using data from other devices) apply the reference tables Vehicle’s computer or mechanical system will be able to calculate the engine Depending on the drop in voltage, the resistance on the alarm contacts will drop and the control unit will immediately fix it. The vehicle control unit sends an adjustable voltage ( 9-volt) directly to the coolant temperature sensor. As the temperature rises, they increase the resistance.Īlarm ones with negative coefficient are installed in almost all cars.

Those with a positive temperature coefficient.Sensors with negative temperature coefficient, work on the principle that the internal resistance decreases as the temperature rises and vice versa.There are two types, depending on the change in resistance: Retest system.As the sensor temperature is measured, its resistance level can vary. If resistance is greater than 5 ohms, repair open Red/White or Pink/Orange wire. If resistance is less than 5 ohms, repair/replace instrument cluster. Disconnect instrument cluster harness connector C237.

Check Red/White Wire & Pink/Orange Wire For Open - Turn ignition off. If resistance is less than 10 k/ohms, repair short to ground in Red/White wire. If resistance is more than 10k/ohms, repair/replace instrument cluster. Measure resistance between instrument cluster harness connector C237 pin No. Check Red/White Wire For Short To Ground - Turn ignition off. If temperature gauge does not indicate hot, go to step 5). If temperature gauge indicates hot, replace coolant temperature sensor. By-Pass Temperature Sensor - Connect a jumper wire between the 2 pins of temperature sensor harness connector. If resistance is less than 10 k/ohms, repair Red/White wire. If resistance is more than 10 k/ohms, go to step 4). Measure resistance of Red/White wire between coolant temperature sender connector and ground. If temperature gauge indicates cold, go to step 3). If temperature gauge indicates does not indicate cold, go to next step. Disconnect Sensor - Ensure temperature sensor connector is in good condition.