Checked all fuses first-none blown. So I finally got around to resurrecting the blower motor resistor by replacing the burnt out bits with $7.35 of parts from the local electrical store. The blower motor resistor assembly, on your 3.9L Dodge Dakota, is tasked with reducing the current that the blower motor uses. If any of them are bad, you should replace the entire box with a new unit. Here is the information on replacing the resistor: REMOVAL Disconnect and isolate the battery negative cable. Here is the resistor out of our Jeep. Repair of the motor vehicle's heating and air conditioning system would not be as complicated as it is with the use of 4-Seasons OE Replacement Blower Motor Resistor. Use a test lamp or a multimeter on the blower motor connector. it is an inexpensive part and easy to replace. 1-2 of 2 Results. 2001 Jeep Wrangler Blower Motor Resistor. as a blower motor ages and wears, it can draw more current—more current than the blower motor resistor was designed to handle. Slide the red plastic clip back, and remove the connector. Reconnect the negative cable to the battery. The new blower motor resistor part matched the one I took off - they both looked like the one pictured here: Open the glove box door to gain access to the blower motor resistor block. 1-4 of 4 Results. When the blower motor switch is in the highest speed position, the blower motor resistor is bypassed and the blower motor receives a direct path to ground. She took it in to Chrysler for diagnostics and they found the blower motor resistor was bad and replaced it. The blower motor relay is the electrical switch that is used to supply the power for the vehicle’s blower motor. Blower Motor Resistor (1) Blower Motor Resistor Connector (1) This is a test. I used 3 x 20cm lengths of heavy gage wire from a spare loom I had available, 6mm dual wall heat shrink ($5.00) and a packet of 2.5mm female spade connectors ($2.35). Filter. The fuse is fine. In this video you'll learn how to find, test, and if need be replace the blower resistor in a 2002 Dodge van. It is responsible for controlling the blower motor’s fan speed. The resistor generally fails because of foreign objects jamming the blower motor fan blade, which causes the resistor to overheat. A Jeep Grand Cherokee Blower Motor Resistor Replacement costs between $140 and $156 on average. Pull out the lock on the blower motor resistor wire harness connector to unlock the connector latch. 10% OFF $75. The resistor is a credit card resistor that utilizes resistor circuit tracers to reduce current flow to the blower. This tutorial will help you test the 2001-2004 Dodge Dakota and Durango blower motor resistor in a step-by-step way. 1-4 of 4 Results. Are you only able to get full blast or a slight breeze? Carefully remove the resistor. Your order may be eligible for Ship to Home, and shipping is free on all online orders of $35.00+. Remove the blower motor and wheel from the heater-A/C housing. 5. For example. Check for full airflow at the vents. I have no blower motor at all when all wires are connected. This tests the function of the blower resistor and motor. 99. If not OK, replace the faulty blower motor resistor block. This will supply control voltage to the resistor, which in turn will run the blower. I'd hate to replace the blower motor only to find out it's the switch or something else. Thanks to comments from Slav below, this is due to the full fan setting bypassing the resistor. Continue checking each resistor in the resistor box. Where should I look next? How to Troubleshoot a Blower Motor Resistor. Don't simply wait around for your vehicle to suffer from performance decrease and risk unanticipated break down. Blower Motor Resistor Block. The blower motor should run on high. 4. The resistor is what controls the blower motor speed by restricting electricity through either the ground or the positive side of the circuit. The less current the blower motor uses, the slower it runs. Blower motor resistor has repeat failures. Over time, settings 1-3 will stop working and only 4 will work. In that case, the blower motor resistor will fail repeatedly. Check here for special coupons and promotions. The blower motor resistor is an electrical component that is a part of the vehicle's heating and air conditioning system. What makes this reduction in current (and speed possible) is the three resistor coils that make up the blower resistor … 10% OFF $75. With an 8mm again, remove the two screws holding the resistor. I never had a problem with my 97 or 04 either but the 97 was only 7 years old when we parted ways and the 04 was only 5 when I had to adopt her out. So if you didn't have power there, or you didn't have ground there, the next step, we're gonna test the resistor. LOCATION. Heater blower motor resistors are generally installed as a part of the heating, ventilation, and air-conditioning system to keep the air that flows through the HVAC system cooling down the resistor. Anyone know the best trouble shooting method or order I should go in to find the problem before I take apart the whole heater housing to get to the blower motor and replace it. If there is a battery voltage, the problem would be the blower motor. Unplug the front blower motor resistor from the wire harness connector. Blower motor resistors can wear out; the blower motor no longer works correctly if this occurs. Part # CR158. If your vents will only blow one speed, this is likely the cause. The blower motor resistor cannot be repaired and, if faulty or damaged, it must be replaced. Moreover, how do you troubleshoot a blower motor resistor? Use Code: DIYSAVE10 Online Ship-to-Home Orders Only. The nature of this component’s job causes it to heat up frequently, which can lead to failure. FILTER RESULTS. Duralast Blower Motor Resistor CR158 $ 34. Get a free detailed estimate for a repair in your area. The fuse under the hood is good (continuity test with fluke). Mopar 5014212AA Jeep Heater/AC Blower Motor Resistor An Significant Warning to All Feminine Motor Motor vehicle Drivers Girls alone in their motor autos want to be quite aware of this rising threat. Found the same conflict blower motor resistor vs. blower motor controller for AZC system. The blower resistor is one of the many obscure parts in your car. I have a 2004 Jeep Liberty and the blower motor fan for the heat and air conditioning over time has gotten weaker and weaker to the point of setting number one not even working anymore. This bad boy is a breeze to test since it's located under the dash and not that hard to access (unlike the 2000 and earlier Dakota and Durangos which have it … Install the blower motor and wheel into the heater-A/C housing. Jeep Forums: Replies: Last Post: Blower Motor Resistor: TJinWV: TJ Wrangler Technical Forum: 66: 10-19-2013 04:39 AM: Blower Motor Resistor - 87 YJ: DivineKaos: YJ Wrangler Technical Forum: 17: 08-30-2012 06:58 PM: If it's not my blower motor resistor, it's my what??? Refer to the wiring diagram for your vehicle and check for continuity on all three resistors and speed switch setttings. BRAND. The heat and air condition fan is controlled by a separate module, called the blower motor resistor. 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