What Is A Blower Motor Resistor

November 08, 2024 Post a Comment

What is a blower motor resistor

Power to the blower motor is fed through the blower motor resistor, so if it fails or has any issues power can be cut off to the motor. A blower motor without power will not be able to produce any air pressure, and as a result the heating and air conditioning system will be left with no air coming from the vents.

How do I know if I need a blower motor or a resistor?

Signs of a Bad Blower Motor Resistor Here are some common signs that your vehicle's blower motor resistor is bad: Loss of HVAC fan control (total or certain speeds) The fan only works on its highest speed setting. No air coming from vents.

Should I replace blower motor and resistor?

We do suggest that you replace the resistor at the same time. It may not be critical, but this will keep the system more uniform. The issue may even be related to the resistor. If you know that it is not related to the issue, then you do not have to replace it.

Where is the blower resistor located?

Car. Into the inside of your car. So whether this blower motor is inside the vehicle or outside the

How much does it cost to replace a blower motor resistor?

How much does a blower motor resistor cost? To replace the blower motor resistor, it would cost you anywhere between $50 to$150 – this includes the cost of equipment and labor.

What are the signs of a failing blower motor?

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.

What causes a blower motor resistor to go out?

In most cases, the blower fan resistor is failing either due to overheating or corrosion. If the blower fan fails, your car will not blow any forced air. However, sometimes the problem can be with the blower motor itself. This is especially apparent when you have replaced the blower fan multiple times.

How long does it take to replace a blower motor resistor?

5 mins. If you have the tools, the replacement part, the skills & the unit is already disassembled.

How do I know if my heater resistor is bad?

If you try to increase the air pressure and you feel no difference in the pressure blowing, then your blower motor resistor may be failing. A damaged blower motor resistor will work on one fan speed which may not be enough to keep the inside of your car cool or warm enough.

Does blower motor affect engine?

Without a functioning blower motor your engine runs the risk of overheating. If you hear that the blower motor is operating but don't feel any air flowing through the vents, the problem is with the airflow controls [source: RepairPal].

How hard is it to replace a blower resistor?

The blower motor resistor is usually extremely easy to access, but the hard part can be positioning your body inside the car to remove the part. The resistor is at the bottom of the HVAC housing or just behind the glove compartment.

Does blower motor affect AC?

The blower motor blows conditioned air through vents in the home. The air conditioner circulates the cool air through the home to the temperature on the thermostat. This is done by spinning the air and it moves through the vents and ducts in the home. As the HVAC system ages, so does the blower motor.

Is there a fuse for blower resistor?

A fuse is often located on the resistor board. The fuse only protects the low and medium blower speeds. High speed will still work if the resistor fuse is blown.

Are blower motors expensive to fix?

Nationally, you can expect to pay about $450 on average for a blower motor replacement, including labor. However, if your unit is under warranty, you might get away with a labor-only charge of as little as $150. More complicated units, or units that are difficult to access, can cost as much as $2,000 to replace.

How do you test a blower motor resistor?

Together make sure we have continuity. So we're going to check between this terminal. And the

What happens when a blower motor goes bad?

Weaker airflow than usual: In some cases, you might have air coming out of the vents, but at a much lower, weaker level than you're accustomed to. This is one of the first symptoms people are likely to experience when their AC blower motor is going bad. It may occur when you're either using heat or cold air.

Can a bad resistor ruin a blower motor?

A defective resistor can seize all the power going to the blower motor resulting in no air pressure

What happens if resistor is bad?

When a resistor fails, it usually gets charred or burns. As a result, it either stops conducting the electrical current/signal or does not resist the current flow.

Is there a fuse for blower motor?

Many vehicles have two fuses for the blower motor, one in the interior fuse block and the other under the hood. The blower motor is usually under the dashboard on the passenger side.

What causes a blower motor to fail in a car?

A defective ground wire or ground wire connection and an open circuit in the power-side circuit (including the fuse, wiring, and fan switch) are the most common reasons why a blower motor fails. Blower motors can also just fail from regular use due to time and mileage.