As a "heat engine", a car engine must rid itself of heat to continue. Efficiency of the heat engine depends on the difference in temperature; therefore, as the temperature outside reaches the temperature inside, the engine stops.
It adjusts the heat in the car so you can control your AC and heat to the temperature you like.
If this is about a car: the heater in a car is basically another radiator, but this one sitting inside the car. When you turn the heater on you draw heat from the engine and into the car. If you aren't running the car hard enough the temperature in the engine will drop.
A car engine is a heat engine, but there are various types of heat engines outside the realm of car and truck engines.
There is a problem with the engine control system. It needs to be repaired by a knowledgeable person.
The heater in your car uses waste heat from the engine to heat the car. When the engine is not running there is no heat to distribute.
The thermostat in a car regulates the coolant temperature inside the engine. When the engine is cold, the thermostat is closed, allowing the heat from the combustion chamber to heat the fluid (coolant) in the coolant galleys in the engine block. Once the engine reaches an optimal temperature, the thermostat opens, allowing coolant to flow through the radiator. The thermostat then controls the flow of coolant to hold the engine at its optimum operating temperature, irrespective of engine load and operating condtions.
Check actual engine temperature with a thermometer--if in acceptable range temperature sensor or gauge may be defective
The auto feature adjusts the heat to the temperature inside the car that the heat is set on. Ex: heat is set on auto at 80 degrees. When the temp in the car reaches a steady 80 degrees the heat cuts off. When the temperature changes under 80 it cuts back on. It is basically a themostat that continually adjusts itself.
so when your using the heater it show how your engine is and if its on red turn on the ac fast or your car will over heat and stuff will melt
A heat engine that uses heat to do work
It helps the computer to judge how much fuel to allow in to the engine, it can also run the gauge on the dash