Where can I get a new blower motor resistor?

I replaced the blower motor resistor and the control unit with new parts from rockauto (ACDelco). I’ve checked the fuse in the dash fuse panel and it is good.

Where is the relay on a blower motor?

Correction assuming 97 is same (probably is)… Fan relay is as posted before on top of the duct work left of the resistors you can see both behind the glove box if you take it out. The purple wire comes from the relay/resistors according to fan speed selected.

Why is my blower motor not coming on?

With the back wire hooked up I ran a jumper directly to the battery pos and attached it the purple wire terminal on the motor. The motor did not come on. So either my motor is dead shorted or something has gummed up the brushes or they are worn out.

How many volts does a blower motor have?

At low is might have 5V, M1 7 ish, and M2 9 ish volts. (note mine is not working and I think resistors are bad I get 11.9V on hi 11.73 v on all other speeds lo, m1, and m2. Anyone ever measure what voltages are normal to speeds ?

I replaced the blower motor resistor and the control unit with new parts from rockauto (ACDelco). I’ve checked the fuse in the dash fuse panel and it is good.

How to fix blower motor on Ford F150?

Blower motor speed control fix. Blower motor resistor replacement – YouTube Ford f150 2012. Blower motor speed control fix. Blower motor resistor replacement If playback doesn’t begin shortly, try restarting your device. Videos you watch may be added to the TV’s watch history and influence TV recommendations.

How do you replace the blower motor on a Mini Cooper?

Press the accelerator pedal down (red arrow) and slide the motor past it. Remove the blower motor from the vehicle. Install the motor the in reverse of removal. Slide it up, cage first. Be sure the mounting flange for the rear most screw is orientated toward the rear.

What should I do if my blower motor fails?

If your blower motor fails, replace the blower and resistor together. You don’t want to have to go back in if one fails later. Over time, a blower motor may become noisy as the motor electrical contacts wear. The blower fan cages also fracture, creating a vibration when the blower is ON.

Is there a fan blower resistor for Citroen DS3 D?

The climate control in my wifes Citroen DS3 D Style Plus failed. The fan was running constantly at full speed so I replaced the fan blower motor control resistor and it has solved this issue for us. I hope this video can help others. Loading…

Why does my blower resistor keep going bad?

Trent, one of the biggest reasons for blower motor resistors to have shorten life is actually because of faulty blower motor drawing too many amps, some times melting wires/plugs, heating up resistors shortening their life. Many Dodge forums tell of this problem.

When to replace the resistor on a heater?

If your fan speed control does not seem to work you may want to replace this fan speed control component. While the switch could have been the issue I also had a squealing blower motor and oftentimes you’ll burn up a resistor when running a squealing heater fan motor.

What causes a blower motor resistor to overheat?

Sometimes, the mechanical resistance to the motor rotation causes an excessive electric current that can overheat and prematurely damage the blower motor resistor. For example, this happens when the fan blade is jammed by a foreign object or when the motor bearings are worn out and it doesn’t spin freely.

How do you change the blower control module?

Disconnect the cable from the bottom of the core. Be careful not to move the core too much, since the AC is still connected. The blower control module needs to be slid to the drivers side to unlock it. Then pull it towards the fire wall and rotate it, it should now be free to drop it down the back.

What does the resistor on a heater do?

It is responsible for controlling the blower motor’s fan speed. When fan speed is changed via the knob on the instrument cluster, the blower motor resistor changes setting, which changes the speed of the blower motor.

With over 1,000 blower motor resistors in stock, Autozone is ready to provide you with the blower you need, no matter what type of car or truck you drive. If you need a new blower motor resistor for your car or truck, shop with Autozone today to get a high quality replacement you can count on.

What kind of resistor do I need for radiator fan?

Ended up using a couple ( 12/10 Gauge Scotch Lock Connectors instead of the crimp types included in the kit, which were much easier to work with in the tight space and with the wiring stubs–no need to strip the wires and no need to hold the wires just exactly right for crimping. Problem solved, radiator fans come on when they should.

Why is my Dorman radiator fan resistor not working?

The Focus was overheating in stop-and-go traffic when the AC was off. Multiple Youtube videos suggested that replacing this part would fix the problem, and they were right. Easy 5-minute job to swap the resistor assembly itself. Easy to cut off the old ruined connector from the very end of the wiring harness.

Can you change the resistor on a Ford radiator?

Easy 5-minute job to swap the resistor assembly itself. Easy to cut off the old ruined connector from the very end of the wiring harness. Major pain to work with the little stubby wires in the wiring harness (Ford made them juuuust long enough to reach the resistor assembly), strip the ends, and crimp on the wire connectors.

What happens when a blower motor relay wears out?

Without it, the AC system will not be able to circulate any heated or cooled air. The blower motor relay controls the current used to power the blower motor, and is subject to the constant on and off switching. Over time, it can eventually wear out.

Where does the purple wire come from on a blower motor?

The purple wire comes from the relay/resistors according to fan speed selected. The purple wire should have battery voltage ~ 12V when on hi. At low is might have 5V, M1 7 ish, and M2 9 ish volts. (note mine is not working and I think resistors are bad I get 11.9V on hi 11.73 v on all other speeds lo, m1, and m2.

What causes a fuse to blow on a blower motor?

If the blower motor relay develops any sort of problem that hinders its ability to properly limit and distribute power, it may cause the blower motor fuse to blow. Any sort of electrical spikes or excessive current from a bad relay will blow the fuse and cut power in order to protect the system.

Can a broken motor switch stop a blower?

A broken blower motor switch can also stop the blower from changing to certain speed settings. If your blower motor cannot change to certain speeds, check both the resistor and the switch on your dashboard. The most common failure points are the resistor and the motor itself.

How is the speed of the blower motor controlled?

The electronic module that controls the speed of the blower motor is called a blower motor control module. In some cars, the blower motor has only 4 or 5 fixed speeds. In this case, the speed of the blower motor is controlled by a blower motor resistor.

How does the resistor work on a blower motor?

Your vehicle’s blower motor resistor controls the speed of your blower motor. When you turn a knob to produce more air flow for heat or cool air, the resistor adjusts the electrical resistance to control the power sent to your blower motor. Since the blower motor and resistor are working almost constantly, it can wear out over time.

Which is the best blower motor resistor for Ford F150?

Shop AutoZone for Ford F150 Blower Motor Resistor. 10% OFF $75. Use Code: DIYSAVE10 Online Ship-to-Home Orders Only

On climate control systems without automatic temperature controls, the blower motor speeds are controlled by a switch wired to a stepped resistor that usually includes a thermal fuse.

How does the speed of a blower motor work?

This means that the current running through the blower motor, and its’ speed is therefore controlled by the resistor value. The user chooses a fan speed by selecting a speed which then connects one of the resistors in the blower resistor pack.

How to replace blower motor resistor in 2004 Silverado?

This is not a good video on how to replace the resistor for a Silverado Blower Motor. The video is less than 4 minutes and if it takes you that long to replace the resistor sub-assembly it has taken too long. I will try to make better movies in the future. IMPORTANT: Watch my short Video on the Letter I got from GM. Loading…

What are the symptoms of a bad heater motor resistor?

Symptoms of a Bad or Failing Heater Blower Motor Resistor. 1 1. Blower motor stuck on one speed. A common symptom of a faulty blower motor resistor is a blower motor that is stuck on one setting. The blower 2 2. Blower motor does not work on certain settings. 3 3. No air from the vehicle’s vents.

What does it mean if your blower motor is not working?

Average rating from 849 customers who received a AC is not working Inspection. The blower motor resistor is an electrical component that is a part of the vehicle’s heating and air conditioning system. It is responsible for controlling the blower motor’s fan speed.

What happens when a heater motor resistor fails?

If the resistor shorts or fails, it may cause the blower motor to remain stuck on one fan speed. The heating and air conditioning systems may still function at one speed, however the resistor will have to be replaced in order for full functionality to be restored. 2. Blower motor does not work on certain settings

When do you replace the fan control AMP?

If that checks out replace the blower motor. If you don’t see a change in voltage on terminal 2 of the blower motor when adjusting the fan control knob than check for power on terminal 2 of the fan control amp and for ground on terminal 1. If you have power and ground replace the fan control amp.

What to do if your AC heater fan is not working?

AC/Heater Blower Fan not Working – Motor or Resistor? Quick Fix If playback doesn’t begin shortly, try restarting your device. Videos you watch may be added to the TV’s watch history and influence TV recommendations. To avoid this, cancel and sign in to YouTube on your computer.

Why does my blower motor resistor keep breaking?

If water spray enters the system, it can quench the hot resistor wires, causing them to break. If you notice the loss of one blower motor speed or all speeds soon after driving through rain, suspect water damage to the blower motor resistor. Alldatadiy.com and Eautorepair.net are professional-grade shop manuals—period.

Why does my GM blower motor resistor keep failing?

In some cases, the heat is so high that it melts the connector. This is common on late model GM vehicles. If you discover a melted connector, do NOT attempt repair. Purchase an upgraded pigtail and splice it into the harness along with a new blower motor resistor.

Where does the power go in a blower motor?

For each higher speed, power flows through one less resistor. Some car makers run blower motor power through the fan speed switch first, then through the blower motor resistor and then to the blower motor and ground. Other car makers reverse that and run power to the blower motor first and terminate ground at the blower fan speed switch.

Why does blower motor resistor keep going out?

The blower motor appears to be defective here. When the brushes wear out the motor draws excessive amps which could cause the resistor to burn out. Before making further replacements remove the motor and check it, especially the brush assembly. This is the most likely reason for the resistor to fail repetitively.

How much does a blower motor cost?

Based on these factors, the costs, including both parts and labor, can range anywhere from $250 to more than $500 for a standard single speed blower motor. If a blower motor is required for a more expensive unit, such as a variable-speed motor, then the costs could be more than $1,000; however, these motors tend to be relatively rare.

Where is the resistor for the blower motor located?

Two individual resistors make up the blower motor resistor assembly on your Chevy pickup. As you’re probably already aware, these resistors are located between the A/C-Heater control panel and the blower motor . The purpose of these resistors is to reduce the amount of the blower motor’s current that’s passing through them.

Where is the blower motor?

A blower motor can typically be found in the heater box , although every vehicle is configured a little differently. Some blower motors are easy to access, and others are buried under the dash.

How to replace a fuse on a blower motor?

Use a die grinder or equivalent to remove the original crimps down to where the lead breaks in two and the fuse will fall off. Use the pointy end of the grinder bit to just carefully drill the rest of the material out and take a bit of the galvanized surface down to clean metal. I suppose you could use a small drill bit for this step too.

The blower resistor is connected in series to the blower fan motor. This means that the current running through the blower motor, and its’ speed is therefore controlled by the resistor value. The user chooses a fan speed by selecting a speed which then connects one of the resistors in the blower resistor pack.

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