It is a resistor that changes resistance based on temperature 0 volts is cold 13 volts pins the gauge. The difference between the one wire and the three wire is the three wire is not Dependant on battery voltage. the old ones will read colder at 11 volts than at 13 volts
Were is the temperature heat sensoe on a 454 chevy motor.
Check actual engine temperature with a thermometer--if in acceptable range temperature sensor or gauge may be defective
A bad engine temp sensor can do that.
loss of control over the air and heat
Assuming this is a 4.3L engine, the engine temp sensor is located between #1 and #3 spark plugs.
It helps the computer to judge how much fuel to allow in to the engine, it can also run the gauge on the dash
A faulty temperature sensor can cause the ECm to think your engine is overheating, this turning the heat light on constantly. You should make sure that your engine isn't in fact overheating though.
The engine's thermostat controls the engine coolant temperature. The temperature control inside for the heater controls the cabin heat.
If IAT = Indicated Air Temperature, under the front bumper, away from engine heat.
yes it does reduce your heat temperature
temperature sensor (−55°C to +150°C) but range varies for other variants
Sensor failure is often heat related , when crank sensors first start to go out they often have an intermittent failure when the engine is at full operating temperature. You are cooling the sensor with water.