What does a Blower Motor do?
- When you turn on the climate control or AC in your car, the blower motor circuit sends a signal, normally through a relay and control module, that causes the motor ...
- The motor gets energized and starts to spin. ...
- Depending on the required climate control action, the fan channels air either toward a heater core or evaporator. ...
How to replace a blower motor in your car?
How to Replace Blower Motor
- Prepare the vehicle. Start by disconnecting the negative battery terminal, and set it aside someplace where it isn’t touching metal.
- Remove the blower motor. The blower motor will be attached at the bottom of the plastic climate control unit, usually with screws.
- If applicable, remove the spring clip and transfer the plastic wheel to the new motor. ...
How to test a blower motor on a car?
Testing the blower motor of your vehicle using a multimeter
- Use the ignition key to turn on your engine the run set to read the purple wire for current.
- Next, having set your multimeter to DC power, turn either your heater or cooling energy to full strength.
- When your multimeter reads no current, then your blower motor is defective.
How much does it cost to replace a blower motor?
Replacing a blower motor will cost you between $250 to $800. However, if your unit is still under warranty, you may only have to pay for labor costs which are about $150. The cost will depend on the contractor you hire, the size of your unit, and whether or not you do it yourself.
What does a blower do on a car engine?
What is the purpose of a blower on a motor? Summary. Both blowers and superchargers are aimed at increasing the volumetric efficiency of the engine by pumping in additional air into the engine to increase the intake manifold pressure of the engine, thereby increasing its efficiency and power. Will a car run without a blower motor?
What is a blower motor?
What is the housing on a blower motor?
How does a brush motor work?
Do blower motors last long?
How much does it cost to replace the blower motor in a car?
“A new car blower motor costs about $50 to $100 for the part and $80 to $100 in labor. Add it up and you're looking at a total charge of $130 to $200 for a new car blower motor.
What are the symptoms of a bad blower motor in car?
Here are 4 common symptoms of a bad blower motor:Low/no airflow from vents. The classic sign of a bad blower motor is restricted airflow coming from your air vents. ... Strange sounds coming from blower. ... Circuit breaker keeps tripping. ... Hot/burning smell coming from air vents.
Can you drive with a broken blower motor?
Should you drive with a bad heater blower motor? A bad heater blower motor will not affect the safety of your car, with the possible exception of you not being able to clear the windshield of snow, ice, or condensation if the defrosters don't work.
What happens when blower motor goes bad?
Poor or Airflow from Air Vents This will be the first and most obvious sign your blower motor has a problem. It may or may not indicate that you need a replacement motor. If there is no air or very weak airflow coming from the air vents, the motor may be clogged, or it may be malfunctioning.
What causes blower motor failure?
Blower motor breakdown can be the result of anything from old age to failed bearings, high amp draw, electrical failure in the windings, dirt accumulation, and more. “The most common cause is dirt accumulation due to lack of maintenance,” said Tom Beaulieu, president of Bay Area Services Inc.
How long does it take to replace a blower motor in a 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. If you are doing it on your own in your garage with common tools, you can expect the job to take 6 hours or more.
What does a failing 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 long does a blower motor last?
10 to 20 yearsBlower motors are designed to last just as long as your furnace itself, anywhere from 10 to 20 years. Just as with any HVAC system, the better maintained and serviced your equipment is by experienced HVAC technicians the longer it will last and the fewer repairs you'll face.
Does the blower motor control the AC?
The HVAC blower motor is the heating and cooling systems component that sends conditioned air from the furnace, heat pump, or air conditioner into the home. Once the system heats or cools the air, the blower motor forces it through the duct system and out the vents in rooms throughout the house.
Can a car run without a blower motor?
Your car's blower motor is not only necessary for the operation of your air conditioner. Without a functioning blower motor your engine runs the risk of overheating.
How many blower motors are in a car?
The number of blower motors in your vehicle depends on its climate control system. Some cars have one blower motor, but that may not be the case for some SUVs and vans. They may have two motors, one in the heater box and another in the vehicle's rear area.
How do you test a blower motor?
2:023:09How to Test Vehicle AC/Heat Blower Motor to Tell if BAD - YouTubeYouTubeStart of suggested clipEnd of suggested clipIt's two little prongs inside of her. So what you want to do basically is just take one end don'tMoreIt's two little prongs inside of her. So what you want to do basically is just take one end don't let these two in touch together will be the same sparks as if you was touching.
How do you tell if it's the blower motor or resistor is bad?
Signs of a Bad Blower Motor Resistor Loss of HVAC fan control (total or certain speeds) The fan only works on its highest speed setting. No air coming from vents. Intermittent or inconsistent fan speed.
How do you test a bad blower motor?
2:093:09How to Test Vehicle AC/Heat Blower Motor to Tell if BAD - YouTubeYouTubeStart of suggested clipEnd of suggested clipIt inside of you inside of like if you let the jumper cable wires touch. And if you can watch when IMoreIt inside of you inside of like if you let the jumper cable wires touch. And if you can watch when I touched it you watch this point up here to fan.
What does a failing 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 my blower motor relay is bad?
If you have a faulty blower motor, you may experience low airflow from the vents, even when the fan is on high. There will be no air coming from the vents if your fan isn't working due to a bad blower motor resistor. Blown relay circuit fuses or melted relays are more serious signs of a bad blower motor relay.
Where is the blower motor located?
In most vehicles today, the blower motor is found underneath the dash or behind the glove box. In older car models, it’s located in the engine bay and within easy reach. When it comes to blower motor replacement, these are the easiest to work on.
Parts of a Blower Motor
As mentioned earlier, the blower motor comprises an electric motor and fan assembly. The motor rotates the fan, helping to draw and push air through a system containing a heater core, evaporator, and ducts. Below is a list of the main blower motor parts including the function of each.
What does a Blower Motor do?
The blower motor function is to rotate the fan that blows cold or hot air into the cabin. Its operation is governed by different components, as we will see in a moment. Being an electric component, the car fan blower working also involves a wiring system and source of electric power. Here is how it works.
Blower Motor Cost
How much does a car blower motor cost for a car? Knowing the amount that the device goes for will help you make important replacement decisions. So let’s go straight to the figures. The car blower motor price depends on your type of car and model or brand. The cost varies between $50 and $200 mostly.
What is a blower motor?
The blower motor is the electric device that pushes heated or cooled air into the cabin. It forms part of a vehicle’s HVAC system. When switched on, the blower ensures a constant supply of conditioned air via the vents on the dashboard. The blower is usually a motor and fan assembly fitted with electrical connections.
What is the housing on a blower motor?
The housing is the blower motor cover that keeps out debris and other material that may damage the motor. The housing also provides the mounting surface to attach the assembly. The electrical harness or connectors that supply current to the motor also mount on the housing.
How does a brush motor work?
In most brush-type motors, the speed controls are physical dials or levers. These work together with a resistor module. The module contains resistors of different Ohm values. Each resistor then offers a specific blower speed by limiting the amount of current that goes to the motor.
Do blower motors last long?
Blower motors rarely operate under stress unless debris gets lodged in the fan blades. They are, therefore, more likely to last a long time. Besides normal wear and tear, other situations that may cause problems include mechanical impact, corrosion, and shorting. Here is a look at the issues you are likely to experience with the component.
Where is the blower motor located?
It's located inside the dash, often on the opposite side of the steering wheel or inside the engine compartment on the firewall.
What is a blower motor resistor?
A blower motor resistor is a simple electric resistor. It's used in cars where the blower motor has only 4 or 5 fixed speeds, as on the left side in this diagram. See the photo of a Ford blower motor resistor. Cars with an automatic climate control system and vehicles where the blower speed can be adjusted gradually are equipped with an electronic ...
How is the blower motor resistor diagnosed?
Diagnostic procedures vary. Often a visual inspection of the resistor reveals the problem. For example, as you can see in this photo, the blower motor resistor in this Ford Escape has failed due to corrosion.
How is the blower motor control module tested?
Mechanics at a dealership can diagnose the HVAC system with a scan tool. If the scan tool is not available, in many cars with an automatic climate control system there is a self-testing or diagnostic mode.
What is the power transistor on a Honda blower motor?
The blower motor control module (Honda calls it Power Transistor) supplies the ground. The power transistor has 4 wires: two come from the climate control system control unit, one is the ground, one goes to the negative terminal of the blower motor. The service manual advises measuring the voltage at the blower motor, then if not OK, at the power transistor and so on.
What happens if a blower motor doesn't run?
If there is a voltage at the motor (at least 4-6 Volt at low speed and 12 Volt at high speed), but the motor doesn't run, the motor is bad. Things like leaves, twigs, nuts, pieces of a ripped cabin filter can jam the blade of the blower motor. This happens often in many cars.
How many ohms should a blower motor resistor be?
According to the service manual, it must be around 4-5 ohms. A failed resistor tested with an ohm-meter. In our case the ohmmeter shows open circuit, which means the resistor has failed. Sometimes, a blower motor resistor might fail due to problems with the blower motor itself.
What is the purpose of a Car Blower Motor?
The purpose of this blower motor is to allowing blowing air to come through the vents by transferring the electrical current.
Why Car Blower Motor Works Intermittently?
Several reasons can lead to car blower motor works intermittently. Here are few causes of this problem:
Why does my car heater stop working?
It indicates that your car blower motor resistor has an issue. Also, Sometimes the heater stops completely due to a bad blower motor resistor.
Why is it important to have an air conditioner on your car?
In addition, It’s not only important for operating an air conditioner system on your car. Without proper functioning of the blower motor, your car might face an overheating problem that affects your car engine .
What to do if blower motor is dying?
If the problem is with your blower motor or it’s dying, you need to change it. Your local auto parts repair center can help you select the correct motor according to your car model.
What does a blower sound like?
The blower makes a squealing or screeching sound when operating.
What to do if fan motor relay is intermittent?
If the intermittent operation occurs for the fan motor relay, the fastest thing you might do is find out similar one from an auto parts shop and replace it.
How Does A Blower Motor Work in a Vehicle?
Once you turn on the vehicle’s heater, the blower motor will blow that heat across the core. Then it will send that heat through the vents , so that you stay warm as you drive your vehicle. The same is true once you turn on your vehicle’s air conditioning. The same process will happen, except the cold air will blow through the vents, to keep you cool as you drive your vehicle.
What is the function of a blower motor?
It has the responsibility of blowing either cool or warm air through the vents. for blowing air through the vents. Generally, it’s controlled by the switch and the blower motor resistor.
What are Some Of The Symptoms of a Failing Blower Motor?
The blower motor operates as the main electric motor. It has the responsibility of blowing either cool or warm air through the vents. for blowing air through the vents. Generally, it’s controlled by the switch and the blower motor resistor. The blower motor can also operate at several various speeds that help to regulate a vehicle’s cabin temperatures.
Why won't my blower push air?
If the blower motor doesn’t push air at any of its specific settings, then you have a faulty blower motor. You may also have a bad switch or even a faulty blower motor resistor. It’s time for a thorough and proper diagnosis of the issue.
How to tell if blower motor is working?
What Other Information Can You Offer About the Blower Motor? 1 If you have a faulty connector, this can cause your vehicle’s blower motor to quit working- even if you have a blower motor that is still in good condition. 2 Oftentimes, the blower motor will quit working due to being stuck or jammed. With this specific situation, the blower motor can be repaired. 3 If you have a blower motor damaged due to a fluid leak, then it’s safe to say that you have another component in your vehicle that is malfunctioning and needs attention.
What is a blower motor resistor?
The blower motor also contains a resistor that provides an opportunity for a change in speed. Without your blower motor resistor, you would not be able to alter the speed of airflow from the blower motor. So, what is the average cost of a blower motor replacement? We have the information you need!
How to tell if your A/C blows out?
Once the A/C or the heat are turned on, the vents will blow out air, but it will feel a lot lower or fainter than what you’re used to. This is a good sign that either your blower motor is out or beginning to wear out. The faulty blower motor is not going to cool or heat a car as it should.
What is a blower motor?
The blower motor is the electric device that pushes heated or cooled air into the cabin. It forms part of a vehicle’s HVAC system. When switched on, the blower ensures a constant supply of conditioned air via the vents on the dashboard. The blower is usually a motor and fan assembly fitted with electrical connections.
What is the housing on a blower motor?
The housing is the blower motor cover that keeps out debris and other material that may damage the motor. The housing also provides the mounting surface to attach the assembly. The electrical harness or connectors that supply current to the motor also mount on the housing.
How does a brush motor work?
In most brush-type motors, the speed controls are physical dials or levers. These work together with a resistor module. The module contains resistors of different Ohm values. Each resistor then offers a specific blower speed by limiting the amount of current that goes to the motor.
Do blower motors last long?
Blower motors rarely operate under stress unless debris gets lodged in the fan blades. They are, therefore, more likely to last a long time. Besides normal wear and tear, other situations that may cause problems include mechanical impact, corrosion, and shorting. Here is a look at the issues you are likely to experience with the component.
