No air flow from the vents when the heater or air conditioning is activated is another symptom of a bad blower motor. … A faulty blower motor can disable an otherwise fully functional heating and air conditioning system, which will make the driving experience less comfortable for the vehicle’s passengers.
How much does it cost to fix a blower motor in a car?
In most instances this repair is on the relatively inexpensive side. A new blower motor will run between $50 and $100. Most blower motors sit in the dash underneath the glove box, and are accessible for replacement. Installation will run in the range of $80–$100.
Is a blower motor important in a car?
The blower motor is an important part of your vehicle’s air conditioning and heating system, as it allows you to control the temperature inside the cabin. While you can drive your car in the winter without a heater, and in the summer without the AC, a comfortable cabin temperature is definitely a plus.
Why is my blower not working in my car?
If little air is coming through the vents (hot or cold), then it could be because the blower motor for the fan or a switch or resistor that controls fan speed isn’t working. Another cause might be that the electronically controlled “blend doors” that direct air flow are stuck or broken.
How do you know if your car blower motor is bad?
Signs That Your Car’s Blower Motor Is Going Bad
- Weak airflow. This is one of the first signs of a bad blower motor that people tend to notice. …
- Noises. Have you noticed any unusual noises coming from your vehicle’s HVAC system? …
- Smoke or smells.
What happens when your blower motor goes out?
No air from the vents
If the heater blower motor burns out or short circuits, it will not function, and therefore will not be able to produce any airflow for the system. The blower motor will usually have to be replaced in order to restore proper operation to the system.
How long does it take to replace blower motor in car?
How Long Does It Take To Replace A Blower Motor In A Car? It generally takes about 4 hours for an experienced technician to do a blower motor replacement.
What does a bad blower motor sound like?
A defective blower motor will make a continuous sound noticeable by the passengers in the vehicle. It can manifest as a knocking, whirring, clunking, vibrating, squealing, or whining noise that persists until the blower motor is replaced.
How do I know if I need a blower motor or a resistor?
Blower Motor Resistor Test
Typically, if the fan will work on some speeds but not on others, the resistor is suspect. Okay, let’s say there’s no melting going on, but your fan doesn’t work on all speeds. Typically, if the fan will work on some speeds but not on others, the resistor is suspect.
Why do blower motor resistors fail?
Water, leaves and debris in the airflow can cause blower motor resistor failure. Car makers design their HVAC systems to reduce the possibility of debris getting into the system. But they’re not always successful. If water spray enters the system, it can quench the hot resistor wires, causing them to break.
Why does the blower in my car only work on high?
Most car manufacturers use a series of resistors to make the heater blower motor run at different speeds. And when one or more of these resistors burn out, you’re usually left with only one heater blower motor speed—high. … Remove the screws, and swap out the resistor module.
What does a blower do on a car engine?
A blower increases the air intake by compressing it without creating a vacuum. This pushes more air into the car’s engine, producing a boost. With the extra air in the boost, more quantity of fuel can be added to the charge, increasing the power of the engine.
Can a bad blower motor cause overheating?
This may be due to a faulty heater blower motor or potentially a bad heater core. … Engine overheating can be caused by a number of things such as low coolant levels, a faulty thermostat, or a failing coolant fan switch.