Q: broken themostat, broken fan blower

asked by on June 14, 2016

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?

AC is not working Inspection $111.46 - $131.46 Get a Quote

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.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

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


Experienced Mechanic?

Earn up to $70/hr

What others are asking

Need a diagnostic.
Most shops charge an hour of labor for a diagnostic. The price for this hour of labor can range anywhere from $90.00 up to $120.00. If you have your diagnostic performed by a technician from YourMechanic you can get this...
Car won't go forward.
The power steering on this vehicle has an electrical power steering pump that supplies pressure to the system and communicates to the computer system on the vehicle for any problems. If you say you are seeing a power steering light...
Steptronic shifter stopped working
It seems that the switch in your shifter assembly that tells the computer you want to shift a gear manually has failed. The switches for the paddles on your steering column are still good. So they are functional. This is...
Lights keep burning out
If the lights on your dash are going out along with other lights like your radio lights or the clock light, then you might be having a problem with the dimmer switch in your vehicle. The dimmer switch is what...
How do you reset the mileage gauge on the dashboard
You should have a "select/reset" knob up in the right hand corner of your dash that will allow you to click and scroll through the various displays such as instant fuel economy, odometer, trip meter, outside temperature. Be sure the...
How can I tell if my radiator uses a bevel washer or a nut?
Hi and thanks for contacting YourMechanic. When it comes to replacing the radiator in your vehicle, it is best to replace the radiator with the OEM type. If there are two types of radiators that go into your vehicle, you...
Not sure if hose or water pump is the issue. Bad leak spraying coolant on belts. Could it be a hose or water pump?
Water pumps have weep holes, through which coolant can leak if the pump is failing, but those weep holes are are relatively small. Consequently, the leak is more likely due to a fairly large hole, or tear, in a rubber...
should seals be replaced while in there? camshaft and crankshaft seals as well as timing cover seal.
Hi there: Anytime you remove the timing cover you should always replace the seals; as they are easy to access since "you're already in there". In order to give you further information about your belts, we need to know the...
Knocking/ tapping noise under hood its loud. Check engine light is not on. I have a 2006 Land Rover LR3
Hello. I would start by checking the engine oil level and pressure. Typically when this engine makes a noise like this it is due to a failure in one of the rod bearings or in the valve train. If the...

Related articles

A Buyer’s Guide to the 2011 Toyota Land Cruiser
This This multi-tasking full-size SUV offers all the versatility of a traditional mini-van with the amenities and comfort level of a high-end sedan. Add in the 4WD that allows you to chew up rough terrain if desired (or necessary) and...
How to Buy a Good Quality Cooling/Radiator Fan Motor
Fans Fans are necessary to keep the components under your car’s hood from overheating. Excessive heat can cause warping, melting, and other damage, not to mention the additional energy suck. The radiator is one of the hottest parts in the...
How Long Does a Cooling Fan Resistor Last?
The The purpose of the cooling fan resistor is to remove heat from the engine’s coolant and from the A/C refrigerant. The resistor does this by drawing air through the radiator and air conditioning condenser. A belt drive fan is...