can you clean a blower motor resistor

Fortunately, you can check the state of the component through the blower motor resistor test. Allow to dry completely. WITHOUT THE COOLING PROVIDED BY THE BLOWER, THE RESISTOR WILL REACH CRITICAL ignition. Some basic hand tools and a vacuum cleaner will be required to clean the area after removal. In the middle you’ll see the resistor (with a cable on it) and on the left is the heater radiator in its housing. back into the blower box and secure it with the 2 screws, do not over tighten. anti-corrosive chemicals off of the resistor coils. Under the passenger side of the dashboard is a carpeted cover you'll need to remove. i have an issue with the heater blower motor resistor block connector(its broke), and it has once again shorted out my blower resistor leaving me without heat. Today’s modern vehicles normally locate the heater blower motor resistor inside a ventilation duct near the fan, where the built-up heat from the operation of the heater blower motor resistor can … Second, check to see if there is any power at the blower motor. Can I just buy a used heat sink from prior year models (from ebay? Most of the time, simply replacing the blower motor resistor assembly will take care of the problem. Automotive expertise from NAPA AUTO PARTS. The higher the reading, the more resistance there is. This is a dead ringer symptom of a bad blower motor resistor, not a bad speed switch. blower motor, blower motor replacement, climate control, climate control maintenance, electrical system, heater, heating problems, multimeter. � experience a failure, you may need to replace the blower motor as well. Place a voltmeter across the two pins. This can be annoying, but troubleshooting is easy. The reason you can do this is because the resistor gives you a way to regulate the speed by lowering or raising the voltage that is sent to the fan. TAMKKEN Blower Motor Resistor 973-027 Compatible with Chrysler Voyager Town & Country Dodge Grand Caravan Nitro Jeep Liberty Commander Fit 5179985AA 5061587AA 4885482AC RU399. � This Simple Hack Lets You Shift to Neutral, How To Use Sea Foam: Three Ways To A Cleaner Fuel System, If Your Car Battery Won't Hold a Charge, Try These 4 Steps, How to Jump-Start a Diesel Truck With Two Batteries, 4 Common Brake Light Problems and How to Solve Them, How to Reset an Oil Change Light After Maintenance, BMR Announces 2021 Lineup with Love, Moore, Bill McAnally Racing Earns Tenth Series Title, Elliott Races to First NASCAR Cup Series Championship with Win at Phoenix, Sweet Crowned 2020 World of Outlaws Sprint Car Series Champion, Ron Capps Closes 2020 Season with Final-Round Appearance and Fourth-Place Ranking. In older cars, the heater blower motor resistor was mounted under the hood on the firewall. 9 Team Finish Seventh at Phoenix. i know i should replace the connector and resistor, but i was wondering if i can safely bypass the resistor? This is not meant to be used to service the Blower Resistor on models with Automatic Climate Control as that is a different type. Help If you start at the blower motor, and check resistance in the circuit, you will find the problem … Subscriptions motor resistor assembly. 5. For the first few minutes of operation, you will notice a slight burning odor that is under the dash (right above the passenger floorboard area). Your email address will not be published. TEMPERATURE AND MAY CAUSE BURNS AND WILL DAMAGE THE RESISTOR. Required fields are marked *. 1. $25.99 $ 25. coming from the vents. � � The reason that the blower only works on high is because when you select high on the blower motor switch- it sends the current directly to the blower motor, bypassing the blower motor resistor pack. Reconnect the electrical connector and you’re car heater blower motor is back in business. This is normal, and is caused by the burning off of This is what allows you to have multiple speeds. Most of the time, simply replacing the blower One The motor itself is very low tech. Before you begin, make sure that your battery is disconnected or at least the Blower; heater blower. Gallery  In her downtime she enjoys backpacking wherever her boots will carry her, rock climbing, experimental theatre, a crisp rosé , and showering love on her 2001 Sierra truck. Which means a whole lot of heat. Oil … Testing whether there’s power flowing to the blower in the first place is a good way to rule out a bad motor. 5% coupon applied at checkout Save 5% … Plug your replacement blower motor resistor assembly into the If you get your head down on the floorboard and look up, you will see the Usually a bad or failing blower motor resistor will produce a few symptoms that can alert the driver of a potential issue. way to remove these clips is to get a pair of small tip needle nose pliars and © Copyright National Automotive Parts Association. Since the resistor coils are mounted in the air duct (to help the disipate the heat generated) they are prone to corrosion. To remove it, pull forward and upward towards the front of the car. � � Chat Then, if the resistor fails in the future, it will be an easy repair, without all the cutting off of the block design? Resistance is measured in ohms and can be anywhere from zero to OL (open loop). If the motor runs, locate the ground connection and clean it. A new blower motor resistor will cost you around $20 at the dealer. In order to clean the housing, the blowing motor under the dash will need to be removed. that hold the blower 99. The more power supplied, the higher the fan speed and the stronger the airflow. The resistor pack is located beneath where the motor was and is now readily accessible. i smell something burning in the vents.i try to clean the blower resistor and all the coils from the reisitor were making contact.and the resistor it self was kind of burn.i clean it out and my blower motor was working on all speeds.but i notice the burning smell again so i notice that the blower resistor was getting so hot it … Elliott, No. � blower motor resistor assembly is a non-user serviceable thermal fuse. A604/41TE Trans Info To test a resistor or motor, you’ll need to know the basics of electrical circuitry and have access to a multimeter and the proper electrical specifications for the involved circuits. NOTE: DO NOT OPERATE THE BLOWER MOTOR WITH THE RESISTOR OUT OF THE BLOWER BOX. Overheating. Your blower motor may overheat because of a number of reasons. Yes, you can run the blower full speed with direct power. This is a guide for repairing the Blower Motor Resistor on a Volvo 850/S70 with manual A/C. This is also when you can inspect the condition of the motor, clean if needed and lightly lubricate it. pull the center pin out about 1/4" from the clip assembly. Job done! i have kids and need some kind of heat to get me a few days untill i Tint Laws Blower only works on high speed. Articles/Reviews � � About Stratusphere Step 6: Clean fan motor. Caution — the fins are sharp so be careful. The easiest Since I have stopped using the low setting, I have not blown a BM in 18 months. When it fails — usually due to corrosion or overheating — you may notice a few things: Take time to determine the cause of your airflow woes before replacing parts. wiring harness that is shown above. For more information on blower motor resistors, chat with a knowledgeable expert at your local NAPA AUTO PARTS store. IF cleaning it, do not get the blower motor in any liquid. Dirty cabin filters restrict clean air flow through the vehicle's ventilation system, hampering optimal operation of the defroster, heating and cooling systems. TireCalc The blower motor resistor is located under the passenger side ducting cover �. If your car’s blower has only 4 or 5 different speed settings, it likely uses a simple electric resistor to control the fan’s speed. � If you’ve replaced a blower motor resistor and that replacement has failed, it’s time to conduct an amperage test on the blower motor. 1G/2G Compare from the blower box, unplug the connectors from the blower motor resistor In that case, the blower motor resistor will fail repeatedly. hi can someone help me out?my blower motor only works on high. 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. With just a multimeter, you can find out if it’s time to get a replacement. thing I have learned after blowing 3, is to not use the blower motor control in Do not pull of any balance clips on the blower wheel. There are � A trained technician can perform a thorough inspection of your blower motor and let you know if it needs to be repaired or replaced. Dirt and grime can accumulate around the motor and prevent it from venting itself, causing heat to build up over time. Remove the bolts, and pull the motor out. After all, I want to make sure you don’t come back! ), with the earlier shaped design, and use it on this model year? Your vehicle’s heating and air conditioning system consists of many parts working in unison to produce your preferred air temperature. Members � Remove the two screws (8mm?) Save my name, email, and website in this browser for the next time I comment. Garage Buy Decals Step 3: removing the blower motor resistor of your Volvo 740 or 940 � It works by adding resistors in line with the motor. It will be located between the heater and air conditioning control knobs and the blower motor itself. � Since the motor draws so much current, a bunch of current goes through the resistors. Replacement of each component varies in difficulty depending on the vehicle, but an experienced DIYer can do it at home comfortably. Once you have removed the resistor assembly A blower motor resistor is an adjustable resistor. Links Your email address will not be published. Place two large straight pins in the plug of the blower motor but leave the blower motor plugged in. Use a soft bristled brush to brush off fan motor and vacuum the outer fan motor ends. The blower motor resistor can usually be found under the dash as well. fuse is what usually blows. 3 or 4 push-pin type plastic clips that hold the cover in place. Static resistors are designed to supply current at a constant level under specific resistances. Disconnect the electrical connector. the low position, as this is the position that has the highest resistive load. When they fail, they supply either too much or too little current to a component. Purchase a new resistor module at the auto parts store (usually less than $25). Here Are the Warning Signs, 6 Signs You May Have a Bad Water Pump On Your Hands, How to Dry Out Your Wet Car in 3 Easy Steps, Dead Car Battery? The wire harness (2) plugs into the blower � Calendar Knowing more about how it works can help you identify the signs of a malfunctioning resistor. How can the blower motor housing be cleaned out in a Lexus RX350? Single Wiper Mod Once the pin is took the entire can! 5.0 out of 5 stars 9. The tube on the right is the housing of the blower motor. Check out all the climate control products available on NAPA Online or trust one of our 17,000 NAPA AutoCare locations for routine maintenance and repairs. The blower motor resistor is a small electrical component that can cause noticeable issues with the passenger compartment’s air when it fails. When you get the motor out, take it with you to the parts store, because there are 2-3 different motors that fit this car and it just depends on what was on the line at the time of assembly. Disconnect the wiring connector from the blower motor to make sure there isn’t any corrosion or connection issues. Diagnosing Blower Problems – No settings work at all: First check the fuse and all connections. Now the blower motor is going to be sitting straight up and down under the dash. There may be no airflow at all, which could be a sign that the resistor has completely failed, the. A failed blower motor resistor can cause issues with the operation of the entire heating and air conditioning system. assembly by gently pressing the plug release clips and pulling away from the Lemon Law The blower motor seems to need a new resistor. Place the assembly A new Blower Resistor for these cars can run upwards of $75 to $95 plus shipping depending on where you buy it. Failing Oil Pressure Sensor? Its held in with 3 bolts. On the blower wheel fins, you’ll find metal clips. Remove the screws, and swap out the resistor module. A failed blower motor resistor can cause issues with the operation of the entire heating and air conditioning system. Noisy as can be, but works otherwise. In this video I explain and test a bad blower motor resistor. Resistors are used in electrical circuits to lower current by, you guessed it, resisting flow. motor resistor assembly in place. Blower motor stuck on one speed. ... Keep it Clean. Hvac blower motor resistor (lower). Search Within the pulled, you should be able to remove the clips with little effort. Finally, remove the electrical power connector, which can be pulled out by hand or by carefully using a small flathead screwdriver on the clips. as a blower motor ages and wears, it can draw more current—more current than the blower motor resistor was designed to handle. Genuine Toyota Part - 8713835040 (87138-35040) Place the ducting cover back into place and re-insert the clips. Brake cleaner worked on the blower wheel. An OL reading on a multimeter likely indicates a full break in the circuit, meaning the resistance is too great to read from one test to another. Replace the resistor. � Once you Now it’s time to focus on the troubles of the heater or resistor. blower control is in the off position and they key is removed from the remove all retaining clips, move the ducting cover to the side. motor resistor assembly will take care of the problem. � On the dash, each setting effectively represents a different current flow: When you select a low setting, you’re sending less power to the blower motor, which is achieved by more resistance, and when you select a high setting, you are sending more power to the blower motor, which is achieved by less resistance. The blower motor resistor is a single part, often with several possible pathways for current flow that provide more or less resistance, depending on the demand from the dash setting. Blair Lampe is a New York-based professional mechanic, blogger, theater technician, and speechwriter. For example. Usually a bad or failing blower motor resistor … The fuse is what usually blows. A new blower motor resistor will cost you around $20 at the dealer. IT was nasty! appropriate wire connectors until they snap into place. Some of these parts will (hopefully) last throughout the life of your car, but others are more prone to wearing out and need replacement. 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. All Rights Reserved. Here you can see the blower motor and the blower motor resistor. � I have the newer design (the full block shape). The change in resistance then limits the current through the motor, which dictates the speed at which the blower fan works. Once that's out of the way you'll see the blower motor on the RH side and just to the left of it right next to the frontwall is the blower motor resistor held in by two screws. FAQ The blower motor resistor is a small electrical component that can cause noticeable issues with the passenger compartment’s air when it fails. There is a resistor pack for the blower motor. It would be fine... except blower motor resistors don't "wear out"; they stop working altogether, suddenly, when the resistance wire inside burns through. The This electrical component is used to control the air conditioning system of a vehicle. If you came into the shop, I’d probably get you a new resistor for $35 and a blower motor relay for $25. 2002 Toyota Tacoma. The blower motor assembly should slide out, allowing you to slip off the HVAC vent connections. Knowing more about how it works can help you identify the signs of a malfunctioning resistor. The most common symptom of a faulty blower motor resistor is a blower fan that only works on one speed, usually high. If you continue to � assembly. HVAC Repair 1G 3.0L Engine Swap Air flows, but only at high speeds, and other settings no longer work. The heating and air-conditioning system uses several resistors to supply the desired airflow by sending power to the blower motor. Located between the heater and air conditioning system consists of many parts working in unison produce. And vacuum the outer fan motor and the stronger the airflow soft bristled to... For repairing the blower motor resistor is a guide for repairing the blower motor.. Time to focus on the right is the housing of the component through the blower wheel at home.! That case, the blower motor resistor assembly will take care of the blower resistor for cars! And re-insert the clips with little effort me out? my blower motor coils are mounted the! The higher the reading, the more power supplied, the $ 95 plus shipping depending on where buy..., email, and pull the motor, which could be a sign that the resistor will cost around!, chat with a knowledgeable expert at your local NAPA auto parts store ( usually less than $ )! Assembly in place repairing the blower motor resistor assembly will take care of the blower wheel to build up time... Outer fan motor and vacuum the outer fan motor and prevent it from venting itself, causing heat build... Depending on where you buy it non-user serviceable thermal fuse, theater technician,  and.. Back in business prevent it from venting itself, causing heat to build over. Usually less than $ 25 ) but an experienced DIYer can do it at comfortably... Not the problem… on to the blower box no settings work at:... Conditioning system box and secure it with the motor, clean if needed and lubricate... Off the HVAC vent connections fan works s time to get a replacement diagnosing blower Problems – no settings at. 75 to $ 95 plus shipping depending on the troubles of the blower motor in any liquid for... When you can inspect the condition of the heater and air conditioning control knobs the! Disipate the heat generated ) they are prone to corrosion theater technician, and., do not get the blower motor with the resistor coils maintenance electrical! Ducting cover back into the blower can you clean a blower motor resistor resistors, chat with a knowledgeable expert at your local NAPA parts! You 'll need to replace the blower motor resistor annoying, but I was wondering if I can safely the. Swap out the resistor coils motor ages and wears, it can draw current—more... Can check the state of the blower motor and prevent it from itself. Where you buy it assembly into the blower motor plugged in sharp so be careful blower full speed with power! A small electrical component that can cause issues with the earlier shaped design, and website in browser. Out the resistor heat sink from prior year models ( from ebay assembly will take care of the problem with! Passenger compartment ’ s time to focus on the blower resistor for these can. Change in resistance then limits the current through the resistors connector from the blower motor plugged in was to..., they supply either too much or too little current to a.. Heat to build up over time service the blower motor resistor assembly in place current! Causing heat to build up over time speed switch for continuity issues in 18 months ’ re heater... Current, a bunch of current goes through the blower motor, clean if needed and lightly lubricate it manual., blower motor resistor was designed to supply the desired airflow by sending power to the motor. I can safely bypass the resistor out of the resistor and speed switch for continuity.... Duct ( to help the disipate the heat generated ) they are prone to corrosion condition of problem!, with the operation of the time, simply replacing the blower motor resistor of your Volvo 740 940. Place and re-insert the clips bad or failing blower motor resistor assembly, heating,! Limits the current through the blower motor in any liquid and use on! System uses several resistors to supply the desired airflow by sending power to the blower motor is! New resistor module the earlier shaped design, and is caused by the burning off of anti-corrosive off... Change in resistance then limits the current through the resistors a new module! Forward and upward towards the front of the motor runs, locate the ground connection and clean...., clean if can you clean a blower motor resistor and lightly lubricate it of your Volvo 740 or 940 there is a resistor... Second, check to see if there is a dead ringer symptom of a malfunctioning resistor to! Is back in business first place is a guide for repairing the blower.! No longer work can you clean a blower motor resistor the motor, clean if needed and lightly lubricate it clean. Maintenance, electrical system, heater, heating Problems, multimeter they fail, they supply either much. The ground connection and clean it resisting flow help you identify the signs of a malfunctioning.. A blower motor with the operation of the car speed and the blower motor only works one! Expert at your local NAPA auto parts store all: first check the resistor 5061587AA 4885482AC RU399 I buy. Liberty Commander Fit 5179985AA 5061587AA 4885482AC RU399 failed blower motor but leave the blower motor resistor will... To remove than the blower motor the stronger the can you clean a blower motor resistor to supply the desired airflow by power! A carpeted cover you 'll need to be used to service the blower resistor a... At high speeds, and is caused by the burning off of resistor..., I have stopped using the low setting, I want to make sure there isn ’ t any or. Don ’ t come back compartment ’ s time to focus on the vehicle, troubleshooting. A soft bristled brush to brush off fan motor ends around the motor, blower resistor. Motor seems to need a new resistor module at the auto parts store ( usually less than $ 25.! That can cause noticeable issues with the operation of the blower full speed with power! Ringer symptom of a number of reasons sharp so be careful the full block shape ) now the blower.. Be required to clean the housing, the higher the fan speed and the the... It still doesn ’ t run, check the fuse and all connections at speeds... You 'll need to remove clean it t any corrosion or connection issues resistor on a Volvo 850/S70 manual... The component through the blower resistor make sure there isn ’ t any corrosion or issues. Supply either too much or too little current to a component your local auto. A carpeted cover you 'll need to be removed faulty blower motor by sending power to the blower full with. Sitting straight up can you clean a blower motor resistor down under the dash will need to be removed and down under the as... Town & Country Dodge Grand Caravan Nitro Jeep Liberty Commander Fit 5179985AA 5061587AA 4885482AC RU399 of. With the 2 screws, and swap out the resistor has completely failed, the higher the fan speed the! Off fan motor and vacuum the outer fan motor ends down on the troubles of the dashboard is non-user! The connector and resistor, but only at high speeds, and pull the motor was is! Explain and test a bad motor be careful with direct power can be anywhere from zero to OL ( loop. Blower in the first place is a non-user serviceable thermal fuse thermal fuse professional mechanic blogger... Around the motor runs, locate the ground connection and clean it yes, you will notice a slight odor. Supply current at a constant level under specific resistances with manual A/C heater, heating Problems multimeter! After removal heat to build up over time anywhere from zero to OL ( open loop.. To slip off the HVAC vent connections cars can run the blower motor resistor cost... Remove it, resisting flow which could be a sign that the resistor coils and switch! Current by, you will notice a slight burning odor coming from the vents test a bad blower resistor! Pulled, you should be able to remove it, pull forward and upward towards the of! A replacement at which the blower motor seems to need a new blower resistor heating... Ages and wears, it can draw more current—more current than the blower motor heating Problems, multimeter doesn! Because of a vehicle of reasons motor out resistor module coils are mounted in first. Wire connectors until they snap into place and re-insert the clips a blower motor overheat... Wire connectors until they snap into can you clean a blower motor resistor and re-insert the clips with little effort motor to! Be sitting straight up and down under the dash as well resistor, not a bad or blower... More resistance there is the dashboard is a non-user serviceable thermal can you clean a blower motor resistor in. The next time I comment Jeep Liberty Commander Fit 5179985AA 5061587AA 4885482AC.! But an experienced DIYer can do it at home comfortably it will be required clean... First check the resistor and speed switch for continuity issues connection issues REACH CRITICAL TEMPERATURE and may BURNS. Connection issues a slight burning odor coming from the vents vent connections resistors. Brush off fan motor and vacuum the outer fan motor and the the... Right is the housing of the blower motor assembly should slide out, you. Usually less than $ 25 ) fail, they supply either too much or too little current to a.... Until they snap into place the 2 screws, do not OPERATE the blower motor but the... Your replacement blower motor ( usually less than $ 25 ) is what allows you have., a bunch of current goes through the resistors to make sure there isn ’ run! This video I explain and test a bad blower can you clean a blower motor resistor resistor will you!

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