Blower Motor Resistor


Diagnosing a Problem With Your Car’s Heating and Cooling System-Check the Resistor

A heating and cooling system is standard on most vehicles. In fact, you may be hard pressed to find a car or truck that does not come equipped with these items. As a result, a blower motor resistor is something that you may become familiar with. This resistor is responsible for air or heat blowing in your car on the middle or low setting. If you notice your fan continuously runs on high, your car needs to go in for repair to ensure more damage is not done.

How does this type of resistor work? The resistor is responsible for controlling air flow though the blower motor. This is true whether you have an AO Smith blower motor, a TYC blower motor or any type. Air flow is controlled using vents and the vents are altered by this resistor. This will be based in part on motor requirements. When you choose the lowest setting, you will be providing the most resistance to air flow. With the highest setting chosen, no resistance is offered to the air flow. This is why, when you notice your heating and cooling system is not operating properly, you should see if it works on the high setting, but not medium or low. If this is the case, you need to replace the resistor.

The first thing you need to know is which type of resistor you have. One is a printed circuit board which has a fully integrated circuit. The other controls fan speed using wires with different coil sizes for the different speeds. Where is the blower motor located so you can determine which type you have? You will find this motor and the resistor inside your vehicle’s heating and air conditioning system. Locate the HVAC blower motor resistor and test it to see if this is the issue.

Be sure, when testing the resistor, to also check fuses, relays and voltage. By doing so, you can save yourself time and headache by ensuring you fix the right part the first time around. This is not a difficult fix, but why do more than you have to? The time required to check these items and fix the resistor is minimal, allowing you to get on with more preferred tasks.

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YouTube 02 Chevy Impala Blower Motor Resistor – How To – YouTube
Heater Air Conditioner AC Blower Fan only works on high. How to replace blower motor resistor assembly. … View Video

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The usual blower, fan, window, etc. motors in cars are quite standard shunt field or permanent-magnet motors. A motor coil acts like a resistor, so you cannot increase JUST the voltage. … Read Article

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The unit is located near the blower motor on the passenger side of the engine compartement. The new oem part will require modification to be made to the plastic base, where the resistor sits. … Get Document

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Blower Motor Resistor Replacement Removal Procedure 1. Disconnect the battery negative cable. Refer to Battery Negative Cable Disconnect/Connect Procedure in … View Doc

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Remove debris that is present. 3. Remove the blower motor and clean debris in the HVAC module. 4. Reinstall the blower motor and install a new blower motor resistor. … Retrieve Content

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BLOWER MOTORS (continued) MID-RANGER LOW CAB FORWARD MODELS 13-200; 210 1995 1991 13-200 Mid-Ranger.. w/Red DotA/C, (Double Shaft).. Bunk Motor(Requirescutting wire.. 275141 .. 01-0812 harness andre-splicing O.E.mtrwire HA1155 … Read Content

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If OK, see the diagnosis for the blower motor resistor and/or the blower motor relay in this group. If not OK, replace the faulty blower motor switch. 24-26 CONTROLS TJ BLOWER MOTOR RESISTOR (Continued) … Fetch Here

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There are several questions concerning two General Motors Blower Motor Resistors. The resistors below are used on the same vehicles, with respect to year, make and model. To make things more complex, the BWD RU1264 requires the original resistor mounting plate be discarded and the … Get Doc

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Being averaged over a complete AC waveform is the real power, which is energy that can be used to do work (for example overcome friction in a motor Therefore for a perfect resistor. For a perfect capacitor or inductor there is no net power transfer, so all power is reactive. … Read Article

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Remove the 2 screws and blower resistor. 5. Remove Blower Motor. A. Disconnect the connector. B. Remove the 3 screws and blower motor. 6. Install New Blower Motor. … Doc Retrieval

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How To Replace A Blower Motor

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Installation Instructions
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This is why a squirrel cage blower motor may cause household lights to dim upon starting, but does not dim the lights on startup when its fan belt (and therefore mechanical load) is removed. … Read Article

Replace vacuum safety switch if there is at least .75 inches w.c. Otherwise, replace the blower motor. H OW T O C HECK T HE T HERMISTOR (T EMPERATURE S ENSOR ) The temperature sensing mechanism is electronic; not mechanical. … Return Doc

Installation Instructions
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If not, repair/replace blower motor. AIR CONDITIONING SYSTEM—YJ VEHICLES DESCRIPTION The air conditioning circuit consists of 3 segments; battery supply, blower motor and compressor clutch. … Access Full Source

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