Q: 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: Whistle noise from air conditioner

Without hearing the noise myself I would say the noise is due to the blower motor is noisey and need to be replaced. The noise may be from debris in the blower motor and it needs to be cleaned out...

Q: I have a misfire from cylinder 1and 5. I replaced the coil pack and all 6 plugs and still have the misfire codes P0132 and P0135

Hello. Check the crankshaft position sensor and the distributor for slop in the distributor drive next, which can cause mistiming and misfire issues as well. A certified technician from YourMechanic can come to your car's location to diagnose the misfiring...

Q: Why does my front blower motor not work on my 2013 Toyota Highlander

Hello. If the blower motor is not working it is typically caused by an issue with the resistor, though it can be the motor itself. I usually check to see if the motor is getting power. If it is getting...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
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...