Coolant sensors have two wires (input and return). A 5-volt reference voltage signal is sent from the PCM to the sensor. The amount of resistance in the sensor reduces the voltage signal that then returns to the PCM. The PCM then calculates coolant temperature based on the voltage value of...
Lift the hood and locatethe coolant temperature sensor. Make sure the engine is cold before removing the sensor. Unplug the sensor electrical connector. Step 2 Remove the sensor using the appropriate deep-well socket. Very little antifreeze will be lost due to the location of the sensor. Step ...
Disconnect the connector fromthe coolant temperature sensor(temperature sending unit). Measure the resistance across the terminal pins using a digital multimeter and write this value down. Do this before running the engine, it must be cold for this test. Step 2 Reconnect the connector to the sens...
Coolant temperature sensor - Allows the ECU to determine when the engine has reached its proper operating temperature Voltage sensor - Monitors the system voltage in the car so the ECU can raise the idle speed if voltage is dropping (which would indicate a high electrical load) Manifold absolute...
ECT Sensor Symptoms #1: Poor Fuel Economy One of the main symptoms of faulty ECT sensorsis poor fuel economy. Once the engine coolant temperature goes bad, it could send false signals to the computer. As a result, the timing and fuel calculations are mixed up. It’s pretty common for the...
your chip cool by pulling heat from the CPU toward the baseplate/heat pipes. The heat transitions from gas to liquid via the condenser and cools down through the heatsink fins and fan. This “cooled down liquid,” or coolant, makes its way back down through the evaporator to be used ...
Your temperature gauge, which measures the temperature of engine coolant, will alert you to a dangerous situation. There are a host of other warning lights designed to let you know about the status of the car. Though there have been some efforts to standardize these lights in all makes ...
12. Faulty temperature sensor A faulty temperature sensor can be a contributing factor to engine overheating in your TT. The temperature sensor, often referred to as the coolant temperature sensor or engine coolant temperature (ECT) sensor, is responsible for monitoring the engine’s temperature and...
Evaporative cooling, or swamp cooling, takes advantage of the drop in temperature that occurs when water is exposed to moving air and begins to vaporize and change to a gas. A fan draws warm data center air through a water- or coolant-moistened pad, and as the liquid evaporates, ...
If the coolant contains silicates (conventional green antifreeze), it can also foul the oxygen sensor and catalytic converter. If enough coolant leaks into the cylinder (as when the engine is sitting overnight), it may even hydro-lock the engine and prevent it from cranking when you try to ...