The engine temperature cooling switch helps regulate the engine's temperature. Teemed with the radiator and incoming air, this keeps the engine at its optimal performance temperature.
there's no switch, it has a temperature sensor.
When 1990 Honda is running cooling fan does not come on but comes on when engine is off and I thermostat and temperature switch changed?"
There is no temperature control switch for the cooling fans. The PCM Power control module receives input from the temperature sensor on the water outlet housing. The PCM turns on the fans when the temperature reaches 210 degrees through the CCRM.
The cooling fan comes on when the engine reaches a certain temperature and is controlled by a sensor switch that kicks the fan on when the temperature reaches the preset temp.
It regulates the temperature of the water in the radiator and tells the fan when to switch on to start cooling or to switch off if its too cool. Engines have an optimum running temperature, and the Thermostat helps keep it at that.
A thermostat switch is a special switch that uses a built-in thermometer to control temperature. It is commonly used in heating and cooling systems to turn the device on or off based on the temperature readings.
The sensor on the thermostat housing is a cooling fan switch. Cooling fan switch closes the circuit to engage the cooling fan(s) when the optimum temperature is reached. When not replaced, cooling system fans will either remain continually "on" or not function causing the engine to overheat, internal engine damage and/or temperature light illumination.
Coolant Temperature Sensor/Switch (For Computer)Locations View
how do you bypass electric window switch on 88 toyota pickup
The coolant temperature switch and the cooling fan relay (same thing) is usually located in the water outlet housing. It will be the bigger sensor, the smaller is the temperature gauge sensor.
You can bypass the AC low pressure switch, on your Toyota Corolla, by removing the switch. You can remove the wiring to the switch and leave the switch and place.