Q: broken themostat, broken fan blower

asked by on

I had no heat 2 weeks ago. I changed the thermostat. 2 weeks later my blower fan quit working. When I push on the knob it blinks 3 times. What's wrong?

Hey there. These issues may be related or separate problems. If replacing the thermostat provided heat, it was most likely stuck closed and not allowing coolant to flow to the heater core. The blower fan is a completely different circuit. If the blower motor has stopped working, it could be due to a variety of items such as the AC control unit, blower motor failure, blown fuse or a AC actuator. A qualified technician, such as one from YourMechanic, will be able to diagnose your AC fault and perform any repairs that may be required.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. broken themostat, broken fan blower

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: AC thermostat stop working each time the light on the AC button start blinking.

It seems that your air conditioning system has a refrigerant leak. Have the system pressurized again to the correct amount and get a spray bottle with dawn dish soap and water mixed. Then spray down the entire air conditioning system....

Q: Car squeals only when accelerating/coasting. Stops when braking

Hi Taylor. Thanks for contacting us today. A noise like you are describing is often caused by wheel bearings that have lost lubrication and are wearing out. It can also be due to a loose serpentine belt or drive belt....

Q: F150 5.0, oil pressure warning light will come on and off

You should have the instrument cluster checked and scanned for codes and check engine harness on drivers side to see if it is shorting out on back of engine near injectors. If no problems are found with harness or codes...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
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.