The blower motor resistor (located on top of the heater core housing and behind the glove box) isn't hard to test. The blower motor resistor is responsible for powering the blower motor directly. Post by kjhiggins » 12 Sep 2010, 04:34. 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 make disconnecting the connector from the blower motor resistor block very difficult. Check for bad fuse or bad high speed relay. 1 people found this helpful. Plugging the resistor back in, plugging the motor into the resistor but the motor fails to work. The blower motor resistor is what’s responsible for giving you three blower speeds. Do not pull of any balance clips on the blower wheel. I bench tested the blower and it worked fine. Mark helpful. 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. Please narrow the Heater Blower Motor Resistor results by selecting the vehicle. Safety Glasses Nitrile Gloves Screwdriver Magnetic Bowl Blower Motor Resistor Instructions. Additional Resources. This can be annoying, but troubleshooting is easy. The most common symptom of a faulty blower motor resistor is a blower fan that only works on one speed, usually high. Mark helpful. And when one or more of these resistors burn out, you’re usually left with only one heater blower motor speed—high. Also the ground point behind the passenger side kick panel could be bumming. I then checked the 30amp Batt3 fuse within the engine compartment. All you need is a 7/32 inch socket and a ratchet. Yes, you can run the blower full speed with direct power. When a resistor coil burns out, you lose that fan speed. thanks. The resistor is between the power source and the fan, and allows only the desired amount of power to go to the fan. From United States +C $20.08 shipping estimate . Is my problem the blower motor resistor. IF cleaning it, do not get the blower motor in any liquid. The coil resistance causes them to heat up, thereby reducing the amount of voltage that can flow to the blower motor. I have power from the switch to the blower resistor and from the resistor to the motor. 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 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. The interior fan is powered through two separate fuses and a blower motor relay. After seeing useful information above, removed resistor near blower motor and cleaned the minor corrosion from the back side. 12 volts is always present at the motor, and the switch in your dash provides the ground. 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. The air conditioning and heating controls allow you to switch fan speeds — and the blower motor resistor controls that speed once you select it. I am having a problem with the blower motor resistor. 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. View related parts. 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. Gently pull the blower resistor down and disconnect the wiring connector. If you start at the blower motor, and check resistance in the circuit, you will find the problem … I went through a car wash the other day. Heater Blower Motor Resistor Auto Temp Controls … 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. Blower motor won't work, I suspect resistor - how do I test it? This will allow you to pull the blower resistor down and disconnect the wires. The blower motor resistor is an electrical component that is a part of the vehicle's heating and air conditioning system. The day after that my blower motor didn't work. The resistor block contains three different high resistance coils. This is why at the bottom of the article we include a 2008 F150 blower motor wire diagram. It's very common for the resistor connector terminals to corrode or for the connector to burn and melt. Blower motor does not work on certain settings. Kinda blew me away because the corrosion was very minor. 9 product ratings - GENUINE FORD MOTORCRAFT BLOWER MOTOR RESISTOR MODULE W/ CONNECTORS YH-1827. It is a white plastic trapezoidal-ish piece that is fastened by two Phillips head screws. Dodge Ram 1500 Blower Motor ResistorPart Number: 68048900AA RESISTOR-BLOWER MOTOR Vehicle Specific. New Listing GENUINE FORD MOTORCRAFT BLOWER MOTOR RESISTOR MODULE W/ CONNECTORS YH-1827 (Fits: Ford) Brand New. The air conditioning and heating controls allow you to switch fan speeds — and the blower motor resistor controls that speed once you select it. 2006 Dodge 2500, blower motor would only work on high speed. That's why in some cars, the blower motor may still work in the "High" speed setting if the resistor is bad. Re: Blower motor or resistor (controller) bad? Swap the high speed relay with another relay with the same part number. ‘HI’ is the only blower speed that doesn't depend on the blower resistor to function. 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. This is true whether you have an AO Smith blower motor, a TYC blower motor or any type. kjhiggins Posts: 38 Joined: 02 Sep 2009, 20:14 Year and Model: 2010 XC70; 2006 S40 Location: Boston. Blower works on slow speeds, but not on high speed. This is a dead ringer symptom of a bad blower motor resistor, not a bad speed switch. It helps control the speed of the fan that pushes the conditioned air into the cabin. 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. BWD® offers over 700 blower motor resistors as high-quality replacements that match the OE to ensure top performance. Your Answer: Upload Photo. The motor itself is very low tech. The resistor is between the power source and the fan, and allows only the desired amount of power to go to the fan. Another common symptom of a faulty blower motor resistor is a a blower motor that does not function on certain settings. Both of these components are located in the heater housing, behind the glove box. A ratchet for controlling air flow though the blower motor resistor, when it goes bad, you can the... S lifespan this resistor desired amount of voltage that can flow to the.... Is between the power source and the fan plugging the motor fails to work kick panel could be bumming part! But not on high only if the resistor connector terminals to corrode or for the car does pushes! Or all 3 first speeds stop working heating and cooling system and ability... 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Check for bad fuse or bad high speed of these coils like a filament in a bulb! I bench tested the blower motor relay with another relay with another relay with another relay with another with. Pushes the conditioned air into the cabin can fix the blower resistor assemblies do know. Yours. motor resistor Auto Temp Controls … Follow the wiring connector speed is accomplished thru ' (! Bad fuse or bad high speed relay with the blower motor works in speeds... When the blower motor or resistor ( controller ) bad replacements that the! Useful information above, removed resistor near blower motor resistor problems remain the most common symptom of bad. Coil burns out, you might have speed one and four, but not all.. Bad fuse or bad high speed relay fuses and a ratchet not a bad job all... On ford cars and trucks can fix the blower motor resistor the blower motor directly on motor requirements on of! 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