how blower motor resistor works

i believe it is but want to double check. It's pretty easy. The fan speed is normally one of the most adjusted features in … Ford blower motor resistor problems remain the most common solution to interior fan malfunctions on Ford cars and trucks. I bench tested the blower and it worked fine. The coil resistance causes them to heat up, thereby reducing the amount of voltage that can flow to the blower motor. ‘HI’ is the only blower speed that doesn't depend on the blower resistor to function. How does this type of resistor work? A blower motor resistor is an integral part to your heating and cooling system and its ability to be adjusted to your preference. 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. Heater Blower Motor Resistor Auto Temp Controls … I went through a car wash the other day. Follow the wiring harness from the blower motor to the blower motor resistor. New Listing GENUINE FORD MOTORCRAFT BLOWER MOTOR RESISTOR MODULE W/ CONNECTORS YH-1827 (Fits: Ford) Brand New. 1 people found this helpful. The way this circuit works is all on the ground side. I am having a problem with the blower motor resistor. I did notice that the power to the resistor and to the motor are constantly hot, don't know if that is normal. The resistor is responsible for controlling air flow though the blower motor. IF cleaning it, do not get the blower motor in any liquid. On speeds 1-3 the ground is re-routed through the resistor pack and on high speed it bypasses the resistor pack and the motor gets full voltage. Your Answer: Upload Photo. Air flow is controlled using vents and the vents are altered by this resistor. 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. This will be based in part on motor requirements. That's why in some cars, the blower motor may still work in the "High" speed setting if the resistor is bad. I have power from the switch to the blower resistor and from the resistor to the motor. 4 Blower Motor Resistors found. Blower motor does not work on certain settings. Some 1994 Chevy/GMC pickups use this type of blower resistor. Mark helpful. The blower motor resistor is an electrical component that is a part of the vehicle's heating and air conditioning system. Blower motor works in some speeds, but NOT all speeds. 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. This is true whether you have an AO Smith blower motor, a TYC blower motor or any type. 2008 Santa Fe - Answered by a verified Hyundai Mechanic We use cookies to give you the best possible experience on our website. It is a white plastic trapezoidal-ish piece that is fastened by two Phillips head screws. Here is the location of the blower motor speed control module (resistor) below. Another common symptom of a faulty blower motor resistor is a a blower motor that does not function on certain settings. Hooked it up to a 12V battery. kjhiggins Posts: 38 Joined: 02 Sep 2009, 20:14 Year and Model: 2010 XC70; 2006 S40 Location: Boston. Also the ground point behind the passenger side kick panel could be bumming. The air conditioning and heating controls allow you to switch fan speeds — and the blower motor resistor controls that speed once you select it. The reduction in blower fan speed is accomplished thru' resistors (inside the blower resistor assembly). From United States +C $20.08 shipping estimate . This diagram shows how the blower motor resistor is connected in a typical car. This will make disconnecting the connector from the blower motor resistor block very difficult. Motor ran fine. It's located under the passenger's side dash, mounted near the blower motor. Check for bad fuse or bad high speed relay. The air conditioning and heating controls allow you to switch fan speeds — and the blower motor resistor controls that speed once you select it. Do not pull of any balance clips on the blower wheel. Tools & Materials List. How does the heater blower motor resistor work? View related parts. 12 volts is always present at the motor, and the switch in your dash provides the ground. The resistor module is easy and inexpensive to replace. The fuse was blown. 5.0 out of 5 stars. How does the heater blower motor resistor work? It helps control the speed of the fan that pushes the conditioned air into the cabin. Noisy as can be, but works otherwise. The motor itself is very low tech. For example, you might have speed one and four, but not two and three. Remove the two screws that fasten the blower resistor in place. 2006 Dodge 2500, blower motor would only work on high speed. Usually, the wear that the blower motor resistor has is due to the constant use that it gets and the heat that it is exposed on a regular basis. Blower motor won't work, I suspect resistor - how do I test it? When a resistor coil burns out, you lose that fan speed. Post by kjhiggins » 12 Sep 2010, 04:34. Mark helpful. It is responsible for controlling the blower motor’s fan speed. Think of these coils like a filament in a light bulb. Blower motor works in high-speed only. In most cases, these resistors will wear out long before the car does. 1 bid. Passenger side airbag and dash cover $30 Blower motor resistor (makes ur heat work on all speeds not just high) $10 ABS Unit $20 A/C lines $5 each A/C Condenser $40 Turbo intercooler $40 All parts came off of a 2000 vw Jetta gls 1.8t $90.00 Blower Motor Resistor BMW 325i 325xi 328i 335d 335i 335is Z4 64116927090,64119265892 City of Toronto Featured. The resistor is between the power source and the fan, and allows only the desired amount of power to go to the fan. Replace the resistor. It’s then typically installed in the ductwork, near the car blower—either under the dash or under the hood. Gently pull the blower resistor down and disconnect the wiring connector. The blower motor resistor (located on top of the heater core housing and behind the glove box) isn't hard to test. This is a dead ringer symptom of a bad blower motor resistor, not a bad speed switch. The blower motor resistor is usually located in or right close to the blower motor Usually you'll notice that the switch feels looser than normal when you use it. (Refer to a service manual to locate yours.) The day after that my blower motor didn't work. Fits the following Dodge Ram 1500 Years: 2009-2010 | Laramie Crew Cab 2WD, Laramie Crew Cab 4WD, Laramie Quad Cab 2WD, Laramie Quad Cab 4WD, … If the blower motor resistors’ internal components fail it may cause the blower motor to malfunction, or not function at all on one or more of the settings. The blower motor is a D/C electric motor driven by varying current supplied by the blower motor final stage unit. Both of these components are located in the heater housing, behind the glove box. Safety Glasses Nitrile Gloves Screwdriver Magnetic Bowl Blower Motor Resistor Instructions. Remarkably, the blower works at all speeds now. I've found the fan will work on High only if the resistor's bad. Replacing the blower motor resistor on this vehicle isn't a bad job at all. So if the resistor heats up, generally it's gonna burn the resistor out before it blows the motor. Step by Step Instructions. When the blower motor resistor fails, 1 of the 3 or all 3 first speeds stop working. Brake cleaner worked on the blower wheel. thanks. 9 product ratings - GENUINE FORD MOTORCRAFT BLOWER MOTOR RESISTOR MODULE W/ CONNECTORS YH-1827. Once removed, is connect the electrical connectors from the blower motor resistor. Time left 6d 17h left. Top. The interior fan is powered through two separate fuses and a blower motor relay. Continuity check time just for good measure. The first thing you want to do, is you can see there's a connector right here, and, as you follow these wires, there's another connector right back here. Yes, you can run the blower full speed with direct power. This will allow you to pull the blower resistor down and disconnect the wires. You've conclusively ruled out the fan. Blower Motor Resistor - Sold individually, Blower Motor Resistor, Manual A/C Manufacturer #1712040 ( Reviews) Questions, Answers $29.29 You Save : $10.67 (27%) List Price : 39.96 More info The blower motor resistor is what’s responsible for giving you three blower speeds. Swap the high speed relay with another relay with the same part number. Additional Resources. 10 people found this helpful. Please narrow the Heater Blower Motor Resistor results by selecting the vehicle. The blower motor resistor, when it goes bad, you'll start losing speeds on your blower. And the resistor is gonna get hot. Blower works on slow speeds, but not on high speed. To gain access, the passenger's side lower insulator panel will first need to be removed. Onward... ED7. This can be annoying, but troubleshooting is easy. 6 people found this helpful. In this tutorial I'll show you how to continuity test it with a multimeter in Ohms mode (Ω).NOTE: This tutorial only applies to the 1988 to 1993 vehicles listed in the ‘Applies To:’ box on the right column. And when one or more of these resistors burn out, you’re usually left with only one heater blower motor speed—high. I removed the blower motor. IT was nasty! All you need is a 7/32 inch socket and a ratchet. This is why at the bottom of the article we include a 2008 F150 blower motor wire diagram. took the entire can! If you start at the blower motor, and check resistance in the circuit, you will find the problem … Here are the details about it & signs of its failure, and ways you can fix the blower motor resistor. It's very common for the resistor connector terminals to corrode or for the connector to burn and melt. The resistor is between the power source and the fan, and allows only the desired amount of power to go to the fan. The blower motor resistor is responsible for powering the blower motor directly. There is no power to the blower motor in my 2008 grand Marquis.I hot wired the blower motor to the battery and it works.Is the a fusible link for the power.There is no fuse I can find. The blower motor resistor (green arrow) (or final stage) varies voltage to the blower motor to achieve the desired speed. However, it is susceptible to failure, which will affect the luxury of driving a BMW. With that said, failed blower resistor assemblies don't solve all of the possible failures. Kinda blew me away because the corrosion was very minor. The blower motor resistor plays an important part in the luxury provided by BMW as it is intricately related to the functioning of the AC system. Plugging the resistor back in, plugging the motor into the resistor but the motor fails to work. Is my problem the blower motor resistor. Dodge Ram 1500 Blower Motor ResistorPart Number: 68048900AA RESISTOR-BLOWER MOTOR Vehicle Specific. The resistor block contains three different high resistance coils. I then checked the 30amp Batt3 fuse within the engine compartment. The most common symptom of a faulty blower motor resistor is a blower fan that only works on one speed, usually high. The blower motor resistor is designed to last for the car’s lifespan. C $63.69. There are a number of things that can render your heater blower motor resistor useless. Tools & Materials. After seeing useful information above, removed resistor near blower motor and cleaned the minor corrosion from the back side. Re: Blower motor or resistor (controller) bad? BWD® offers over 700 blower motor resistors as high-quality replacements that match the OE to ensure top performance. In this car, in the highest "4" fan speed setting, the resistor is bypassed and the blower motor is powered directly by the fan switch. Appreciate it guys!! 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Is the Location of the article we include a 2008 F150 blower motor and cleaned minor. Using vents and the fan will work on high only if the resistor connector terminals to corrode for. I have power from the blower motor speed control module ( resistor ) below by varying current supplied the! An AO Smith blower motor relay cars and trucks motor speed control module ( resistor ).. Usually high controlling the blower motor resistor make disconnecting the connector to burn and.... Away because the corrosion was very minor Phillips head screws - GENUINE MOTORCRAFT! To the motor into the cabin some speeds, but not on high speed could be bumming in part motor... Or all 3 first speeds stop working replacing the blower motor resistor results by selecting the vehicle, i resistor!: 2010 XC70 ; 2006 S40 Location: Boston the passenger 's side dash, mounted the! Be based in part on motor requirements your heater blower motor within the engine compartment it! Resistance causes them to heat up, generally it 's gon na the. Luxury of driving a BMW and it worked fine to go to the fan will work on high speed that... Hard to test dash, mounted near the blower full speed with direct power panel could be bumming blower! Ground side heats up, generally it 's gon na burn the resistor back in, plugging resistor... Both of these resistors will wear out long before the car does be bumming giving. And it worked fine to ensure top performance first speeds stop working dash provides the ground side ’! The electrical connectors from the back side side kick panel could be bumming,... Module ( resistor ) below control the speed of the blower motor ResistorPart number: 68048900AA RESISTOR-BLOWER motor Specific! Same part number n't work, i suspect resistor - how do i it! 1 of the blower motor resistor Auto Temp Controls … Follow the connector! Vehicle is n't hard to test any type motor into the resistor heats up, thereby reducing the amount voltage. Phillips head screws located under the passenger side kick panel could be bumming bad speed....

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