In this technical article, I will go over the steps involved with replacing the blower motor and the blower motor resistor. The blower motor resistor is an electrical component that is a part of the vehicle's heating and air conditioning system. Not as common as the other way around. TEMPERATURE AND MAY CAUSE BURNS AND WILL DAMAGE THE RESISTOR. Basics Of Troubleshooting The Blower Control Resistor. What are the symptoms related to a bad heater blower motor resistor? The blower motor resistor is located under the passenger side ducting cover Discussion Starter • #1 • Jul 22, 2019. A Chrysler 200 Blower Motor Resistor Replacement costs between $66 and $75 on average. Replacing the blower motor resistor will take you a little over one hour. remove all retaining clips, move the ducting cover to the side. when the resistor goes out, the blower motor will only work on high. It should measure zero ohms. Then pry the dashboard up and away. The ground or negative is the lower blade. Step 2. 2. on high it bypasses the resistor for maximum speed. Use the push-in pin retainer to remove the push-in pins that secure the right instrument panel insulator. Conduct an amperage draw test at the same time to rule out excessive current draw from the blower motor. Opel Astra H Zafira B Cooling Fan Resistor Repair. Since I have stopped using the low setting, I have not blown a BM in 18 months. In, fact, this occurrence happened to him not once, not twice, but t… The heater blower motor resistor is located underneath the dashboard in the heater/AC compartment. Place the ducting cover back into place and re-insert the clips. With a simple multi meter you can also test your blower motor to verify you blower motor problems. Repair guide Stage 1 - Investigate. but on low or medium speeds, the resistor slows down the blower motor. If blower runs, it is more than likely the blower motor speed resistor just rear of the passenger side of engine. The interior fan is powered through two separate fuses and a blower motor relay. ignition. The resistor enables the heater blower motor to change the speed of the fan. Blower resistors are resistors which are used to control the fan speed of automotive blowers. A blower motor resistor controls the fan speed of the blower, so if you have a blower that’s stuck on one speed or doesn’t work on certain settings, it could be the resistor. Blower Motor Resistor Repair Kit. First you'll need to remove some screws on the top of the dash in the Saturn. Disconnect the electrical connector. The wire harness (2) plugs into the blower Hope y'all enjoyDisclaimer:Due to factors beyond the control of Oz Mechanics, I cannot guarantee against improper use or unauthorized modifications of this information. Purchase an upgraded pigtail and splice it into the harness along with a new blower motor resistor. pulled, you should be able to remove the clips with little effort. See 100 other super simple car repairs you can do on your own and avoid a trip to the shop. On most American and import cars and light trucks, the blower resistor is located near or on the blower motor. run positive and ground jumpers direct from battery to check in blower motor works. If blower runs, it is more than likely the blower motor speed resistor just rear of the passenger side of engine. Set the insulator panel aside. Step 1. The durable design resists thermal fuse failure, overheating, and burnout, ensuring a long service life. Your order may be eligible for Ship to Home, and shipping is free on all online orders of $35.00+. Blower Motor Resistor How It Works Symptoms Problems. It is held on by 2 or 4 screws. WITHOUT THE COOLING PROVIDED BY THE BLOWER, THE RESISTOR WILL REACH CRITICAL There is not much you can do to repair a bad blower resistor, as it is better to replace it completely. If the fan operates at some speed settings, but doesn’t work at some other speed settings, this means that the blower resistor is faulty and should be replaced: Find the blower resistor and detach it from the rest of the circuit. The ground or negative is the lower blade. way to remove these clips is to get a pair of small tip needle nose pliars and On the flip side, if the blower motor resistor isn't doing its job properly, if the signal that it's getting to the motor is causing the motor to put a lot of strain on itself, it could burn the motor out. This is normal, and is caused by the burning off of Purchase a new resistor module at the auto parts store (usually less than $25). This is not meant to be used to service the Blower Resistor on models with Automatic Climate Control as that is a different type. Purchase a new resistor module at the auto parts store (usually less than $25). blower control is in the off position and they key is removed from the Any injury, damage, or loss that may result from improper use of these tools, equipment, or from the information contained in this video is the sole responsibility of the user and not Oz Mechanics. Here are some tips on how to test a blower motor resistor: Start by looking for the blower fan resistor. The symptoms of one of these going bad is that your fan will work at certain speeds but not at others and it's a pretty easy replacement. Disconnect the blower motor resistor from its harness connector and turn the key to the on position (but no need to start the engine). This may have happened … Take it out and re-solder all 5 plug contacts on board. assembly by gently pressing the plug release clips and pulling away from the Blower motor (optional) – If your BMW E46 blower resistor is going bad, then unfortunately your blower motor is probably on its way out too. This repair manual will help you to fix the blower motor of your Volvo 740 or 940. Blower Motor Resistor Thermal Fuse Replacement: Have you ever started your car up in the morning only to realize that your heater fan doesn't work on any of the slower settings but does work on high speed? Remove the screws, and swap out the resistor module. motor resistor assembly. unplug blower motor. In cases like this even when you replace the blower motor resistor the blower motor itself may still be struggling and cause the resistor to fail again quickly despite being a new part. wiring harness that is shown above. The tools you'll need are 8,10, and 11mm sockets with ratchets and extensions. from the blower box, unplug the connectors from the blower motor resistor Blower Motor Resistor Repair … Water, leaves and debris in the airflow can cause blower motor resistor failure Repair guide Stage 2 - By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. In each case there should be continuity. It is also possible that the heater motor blower may not work at all. The illustrations in the image viewer show the front view of the female metal terminals of the blower resistor connector. A failed blower motor resistor will usually cause symptoms that can be easily identified. that is under the dash (right above the passenger floorboard area). Over the last ten years or so, motor manufacturers have introduced more sophisticated Heater Blower Resistors to control the blower fan motor for the heater and, on many, the digital aircon too. The most common symptom of a failed blower motor resistor is when the heater fan only runs at the highest speed setting (4 or 5) and doesn't work at low speeds. If not OK, replace the faulty blower motor resistor. The With that said, failed blower resistor assemblies don't solve all of the possible failures. Look around the outside and all around the motor to locate a 2 by 3-inch plate. Heater Blower Resistor and/or connector. Before you begin, make sure that your battery is disconnected or at least the If airflow seems restricted or lower than normal, check the cabin air filter. It took several hours to replace the heater motor and/or resistor. This can be a bad blower motor resistor or a failed speed switch. Get a free detailed estimate for a repair in your area. With that said, failed blower resistor assemblies don't solve all of the possible failures. Standard® offers over 700 blower motor resistors as high-quality replacements that match the OE to ensure top performance. Due to factors beyond the control of Oz Mechanics, no information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. Disconnect the electrical connection from the blower motor Disconnect the electrical connection from the blower motor resistor Remove the blower motor resistor retaining screws. How to test and replace your blower motor resistor - YouTube Remove the two screws (8mm?) Remove the blower motor resistor. If you get your head down on the floorboard and look up, you will see the Using an ohmmeter, check for continuity between all of the blower motor resistor terminals. A blower motor resistor is an adjustable resistor. Ford Blower Motor Resistor Pigtail Replacement . A new Blower Resistor for these cars can run upwards of $75 to $95 plus shipping depending on where you buy it. The usual problems - Heater Blower Resistor and/or connector. it should be located on the black box under the dash on the passenger side. motor resistor assembly will take care of the problem. If OK, repair the wire harness circuits between the blower motor switch and the blower motor resistor or blower motor as required. Oz Mechanics recommends safe practices when working on vehicles and or with tools seen or implied in this video. My blower would only work on "4". If you feel comfortable replacing the resistor yourself, you can find out where the component is and how to test it. Faulty Heater Resistor (Otherwise known as the Heater Blower Resistor, Resistor Pack, Heater Rheostat or Blower Motor Resistor, Part No. This is why at the bottom of the article we include a 2008 F150 blower motor wire diagram. The blower motor resistor is located under the passenger side ducting cover that is under the dash (right above the passenger floorboard area). If the blower motor itself, when it's getting its power, is having a lot of trouble, if the motor itself is tired inside, the brushes aren't doing their job as well, it's gonna put a lot of strain on the resistor. Removal Always disconnect negative battery terminal. If power is supplied to blower motor through the speed switch and blower motor resistor: Disconnect the electrical connector at the blower motor. pull the center pin out about 1/4" from the clip assembly. The fan speed can be changed either by switching the blower resistor resistance mechanically, using a rotating lever, or electronically by the air conditioning system. If there is no power indicated on high blower speed, the problem is most likely the switch or the fuse. It should measure zero ohms. A good indication that you need a blower resistor is if your blower is only working on the highest speed setting. thing I have learned after blowing 3, is to not use the blower motor control in This electrical component is used to control the air conditioning system of a vehicle. 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. The change in resistance then limits the current through the motor, which dictates the speed at which the blower fan works. anti-corrosive chemicals off of the resistor coils. Refer to the wiring diagram for your vehicle and check for continuity on all three resistors and speed switch setttings. Do You Have Ford Blower Motor Resistor Problems Or Another. 12 volts is always present at the motor, and the switch in your dash provides the ground. Locate the HVAC blower motor resistor and test it to see if this is the issue. Problems with a blower motor resistor are common in many cars. This insulator is on the bottom side of the dash. A Chrysler 200 Blower Motor Resistor Replacement costs between $66 and $75 on average. Once you have removed the resistor assembly Plug your replacement blower motor resistor assembly into the appropriate wire connectors until they snap into place. Place the assembly back into the blower box and secure it with the 2 screws, do not over tighten. . One Check here for special coupons and promotions. Order Blower Motor Resistor for your vehicle and pick it up in store—make your purchase, find a store near you, and get directions. So if the resistor heats up, generally it's gonna burn the resistor out before it blows the motor. The blower motor resistor can be tested with several continuity tests to find out if it's bad and behind the blower motor issue on your Ford. High blower speed has direct power to the motor from the switch. 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