Q: Why does my car blow heat then stop and then start up again??

asked by on

Last night my heater was working fine, then it stopped, then starting blowing heat again. then later on today it did it again??

My car has 165000 miles.
My car has an automatic transmission.

This may be a sign of a faulty blower motor. As you know, these have electric motors in them that wear out over time and will begin to make squeaking or grinding noises as the bearings begin to wear out. The electrical contacts may also wear out causing the motor to fail. I would recommend having an expert from YourMechanic come to your location to diagnose and replace your blower motor.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Why does my car blow heat then stop and then start up again??

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Have no heat, I've took the thermostat out still no heat. Flushed the radiator couple times. Doesn't seem to be flowing n radiator

The complete cooling system should be drained and fresh clean water put in with a good quality radiator flush put in. Run the engine for at least 30 minutes at 1000 rpms with the heater in the on position but...

Q: Occasional hesitation and shaking, brakes engage randomly

Hello. I suggest to inspect two components for possible faults. It is possible that the accelerator pedal position sensor is improperly translating pedal position which will greatly impact the air-fuel ratio negatively which could cause a hesitation. I'd suggest getting help from a...

Q: Blower motor resistor and transistor.

Your car is not equipped with a transistor for the blower motor. Your car has a blower resistor that controls the speed of the blower motor with the changes to the blower switch. The burning smell you are getting may...

Related articles

P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.