Q: Blower motor not working

asked by on

When I start my Jeep to let it warm up the heater blows hot air and it blows it like it should on high, but when I drive down the highway for about 20-30 miles and go to turn the fan up, it barely pushes any air out. I can hear it blowing under the passenger dashboard, but there is barely any air coming out of the vents. It doesn't have a problem heating. It only happens when I am driving down the highway for a ways. I have cleaned the in cab filter but haven't tried anything else. When I pull the filter out and turn the fan up it blows air out of the filter alot good, but when I put it back together it still won't push any air out of the vents, doesn't work on floor, front vents, defrost, and also doesn't work on recirculate.

My car has 45000 miles.
My car has an automatic transmission.

If your heater only blows when the setting is on high, this may suggest that you have a faulty blower motor resistor. The highest speed setting may still work because in most cars in the highest fan speed settings the current bypasses the blower motor resistor. In some cars, if the resistor is failed, the fan may stop working completely. Another reason a blower motor resistor may fail is when the blower motor has a mechanical problem or when a foreign object jams the blower motor fan blade and prevents it from spinning freely. This leads to increased current through the resistor and causes it to overheat and fail. I would suggest having an expert from YourMechanic come to your location to diagnose your system to determine what may be causing the fan not to work properly.

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. Q: Blower motor not working

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: 2005 dodge Caravan overheated air conditioner is blowing heat one of the fans was not working so I replaced it air conditioner sti

Hello, thank you for writing in. If you have not resolve the issue(s) that caused the vehicle to overheat in the first place, then you need to start there. Do so by checking the level of your coolant, the radiator...

Q: what engines fit my jeep grand cherokee laredo 2002

The 4.0L engine block and cylinder head (that is, the long block) used in several Jeep products from model years 2000 through 2004 may work in your vehicle. Your VIN number would be required to check. If you are looking...

Q: Why does my blower motor not work after a crossed wire problem in my 2004 Pontiac Grand Prix

Hello. Depending on exactly where the short was it may not blow the fuse. Most of the time it will melt the resistor itself internally. It may also have a short in another location. I usually take a voltage meter...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
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.