Most vehicles today use a rev limiter. Some use a fuel shutoff. These are controlled by the ECU.
If the electrical power is shut off to ANY electrical motor, it stops running.
They don't 'shut-off,' but they are limited to about 120 from the factory.
Thermal switch. Likely caused by limited air flow to motor or bad bearings in motor.
shut off the engine
It doesn't need a shut off valve. In fact only Ford Motor Company installs fuel shut off valves in their cars.
when my car did this it was a blown fuse
If the chip that tells the engine what to do overheats , the car will shut off. Most cars do not have such a devise.
Have your blower motor resistor or blower motor checked out
An air-intake engine shut-off valve regulates air-flow to the motor, and operates as an emergency shut-off valve. There are also shut-off valves on water hoses, so shut-off valves really control the inflow of any liquid or gas.
Generally automotive blower motors are designed to run on the lowest speed even though the heater is turned off. The purpose is to circulate fresh air into the cab.
sorry it is not.
The blower motor may shut off after only a few seconds due to a malfunction in the motor itself, a problem with the electrical connections, or an issue with the control system. It is important to have the motor inspected by a professional to determine the exact cause of the problem.