Q: Blower motor not working

asked by on December 11, 2016

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.

Heater Blower Motor Resistor Replacement $91.43 - $616.27 Get a Quote

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.

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

What others are asking

Just changed oil,how do you make change oil light go away?

To reset the oil change reminder light on your vehicle: Turn the ignition key to the run position, do not start the vehicle. Press the gas pedal fully 3 times within 10 seconds. Turn the ignition to the off position....

I took my car in for a full service today. They did the service and my car suddenly cannot be driven. What could the issue be?

Hi there. If the code came on for the camshaft position sensor, then the computer has seen that the sensor is not working properly. If the vehicle was working before and now has the code for the camshaft position sensor,...

2003 lincoln ls v6. P2270 code is read on scanner. I've changed the catalytic converter but the code is still coming back.

Hi there. The code of P2270 is coming up for an issue that is causing the emissions to be out of calibration. Check the following conditions on your engine. Check For an exhaust leak near O2 sensor For a...

Brake light issue

The rear brake light on the right uses the same power as the one on the left. If you are getting brake lights on the left side but not on the right, then you will need to test the right...

Hazard lights flash around 5 times well after car is locked

Hi there. There are some times when an electrical glitch or error code is stored in the ECU that will trigger "odd" electrical problems like you've listed in your question. The best way to determine why this is happening is...

Heater blowing cool air 2014 Jeep Wrangler

You need to make sure the engine is getting up to operating temperature in order to get full heat out of the heater core your engine needs to be up to operating temperature. If the engine is not then your...

99 jeep grand Cherokee radiator leak

Hi there. A slow and progressive-expanding leak as you've described is typically an indication of a damaged radiator seal to a minor split on the radiator hose. If the radiator has not yet been replaced on the Jeep or not...

Front blower motor barely blows - 2012 Chrysler Town and Country

Check to be sure the cabin air filter is not blocked with dirt and debris. This is often an electrical issue, but there is always a possibility that the blower wheel has filled with debris if the filter is missing...

2006 Jeep Commander that starts but turns off I tried to start 3 times did the same thing after that it doesn't turn over

It sounds like you have activated the anti-theft system, and after several attempts to try and start it, it disables the starter also. You should have the system tested to see if the key is bad, or if your key...

Related articles

2014 Jeep Cherokee vs. 2014 Jeep Wrangler: Which One Should I Buy?
SUVs are a crowded market, but Jeep has long been a name to remember. SUVs are generally built on the chassis of a truck and provide the overall handling of a truck instead of feeling more like a car that...
The Best Used Cars to Buy If You're a Skier
When When summer ends, skiers start thinking about hitting the hills, and that means having to contend with winter driving conditions. Not just any vehicle is going to get the job done. We have evaluated several used ski-worthy vehicles, and...
How to Buy a Good Quality Heater Blower Motor Resistor
Vehicles Vehicles that are equipped with a manual HVAC, or climate control, system utilize a blower motor resistor to control the speed of the heater blower. If you are driving a minivan or an SUV with a separate rear passenger...