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Can blower motor make blower motor resistor go bad

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Posted on Jan 02, 2017

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SOURCE: 2002 CHRYSLER T&C FRONT BLOWER NOT WORKING ON ANY SETTING

I had the same thing happen today except rear control works period (no conditions). I am going to test the leads to the front blower first while on. If voltage is there, then I will check the motor brushes - could be a cheap easy fix (~$6 + time). Alternatively you could replace the motor ($50+ plus time). If no voltage there then it is probably electronics.

It could be a resistor(s) but I believe it is unlikely that *all* the resistors would go at the same time.

Posted on Dec 18, 2008

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SOURCE: have to change blower motor resistor where is it located

Located behind glovebox. 2 screws and 2 plugs. very simple

Posted on May 30, 2009

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SOURCE: help with location and replacing blower motor resistor

depends on what year van..1996-2000,located in engine compartment just above right strut tower at firewall..2001-2007..located behind glove box

Posted on Jun 12, 2009

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SOURCE: Replacing a Blower motor resistor

It's called a resistor block, you can't just change the resisitor, you have to get the block. All it is, is a small circuit board with the resistor soldered in it.
I don't have my manual at the moment, so I can't exactly tell you where it is.
Usually they are mounted near the blower motor on the firewall,
On some the blower motor has to be removed to get at it,
Some are mounted under the dash in the duct work.
Try calling a dealer and ask for the parts dept., they can probably tell you where it is. Just ask them if they can tell you where the resistor block for the blower motor is.

Posted on May 08, 2010

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SOURCE: value of AC Blower resistor for 2005 Chrysler Town and Country

continuity should exist ,with varing resistance ,between each of terminals if any checks indicate infinite resistancereplace blower motor , if a ground signal does not exist at the blower resister connector repairthe blower motor switch andor the circuit leading to switch .this was a hard one to find ! good luck hope i helped you ,if you need more info let me know and i'll see what i can find .

Posted on Oct 03, 2012

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Heater wiring diagram for 89 Corvette


The blower control module may be faulty?
blower motor control module-qdebv4030j4mxqgwhfd2t5j1-1-0.jpg

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Hi Victor,here's a link to the blower motor resistor,Usually when it is stick on high,the resistor is bad,can't tell by looking at it. GET 25 GIFT CARD FOR EVERY 100 SPENT ON ONLINE SHIP TO HOME ORDERS Here's the resistor. Heater Blower Motor Resistor at AutoZone com Best Heater Blower Motor... Take your's off and take it to Autozone and they will get you the right one,it's showing 2 types,and if it doesn't solve the problem,they will take it back.

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Heater is on high will not change to a/c or lower speeds


The blower motor resistor is bad. First, determine if the resistor is separate from the blower motor. Most resistors are built into the blower motor. If separate, replace resistor. If not replace blower motor.

Jun 14, 2011 | 2007 Nissan Armada LE

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The heater squeels when on the high setting and does not work on any other setting I am trying to find an online guide on how to change the blower motor or is it the blower motor resistor? its for a 2002...


Blower motor is bad. Resistor controls speed. Motor is so worn out that it will only turn when set on high. Best to replace it before it burns out something else due to the high current draw.

Feb 02, 2011 | 2002 Chrysler Town & Country

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I have 2002 infinity I35 and the blower motor stop working ,I took out the blower motor to make sure was good. YES the blower motor still working .the only think I really don't know how to check is Blower...


WELL YOU HAVE TO USE A VOLT METER CONNECT ONE VOLT METER WIRES TO GOOD GROUND AND THE OTHER VOLT METER WIRES GOES TO EACH SWITCH SPEED.IF VOLT METER GET VOLTAGE A 1 OR 2 CONTROL SPEED RESISTOR BAD.IF RESISTOR BAD YOU WILL GET 1 OR 2 BLOWER MOTOR SPEEDS.IF BLOWER MOTOR WORKING.CHECK THE AC AND HEATER CONTROL SWITCH FUSE OR CHECK BLOWER MOTOR FUSE AND RELAY.IF ALL GOOD SO FAR CONTROL SWITCH ITSELF COULD BE FAULTY.

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Heat & A/C Blower Controls Inop. 2003 Dodge Dakota 6cyl


The resistor will cost you 12 dollars at your local dealership. It's located under the passenger side dash and is very easy to replace. The resistor installed at the factory is defective and the new one from Mopar is the correct resistor. It would be worth you while to replace it now while you're working on the blower motor. The blower should still work on the high setting, even with a bad resistor but, replacing the resistor may fix the problem.

Sep 19, 2009 | 2003 Dodge Dakota Club Cab

1 Answer

Air and heat wont work unless blower is on high, where do i find the regulator to change it


Sound like the blower motor resistor is bad.

Blower Motor Control Module Removal & Installation To Remove:
  1. Remove the insulator from the right side of the instrument panel.
  2. Disconnect the connectors from the blower motor resistor and blower motor.
  3. Loosen the two forward screws and remove the rear screw of the resistor assembly.
  4. Remove the blower motor resistor assembly.
To Install:
  1. Install the blower motor resistor assembly.
  2. Install the rear screw and tighten the forward screws.
  3. Connect the electrical connectors to the blower motor and resistor assembly.
  4. Install the insulator under the right side of the instrument panel.

Jun 24, 2009 | 1998 Buick Century

1 Answer

Durango vent blower fan


The blower motor resistors are known for going bad. Usually its because the blower starts drawing too much current. What I would recommend doing if you can and have the tools, is to check the blower motor connector to make sure 12 volts is present. If so than I would recommend replacing the blower motor resistor. Then if the same issue ever happens again and the blower motor resistor is bad again, you will need to replace the blower motor and the blower resistor as the final repair.
Here is some info about testing the resistor using a multimeter it you have one:

DIAGNOSIS AND TESTING- BLOWER MOTOR RESISTOR WARNING: ON VEHICLES EQUIPPED WITH AIRBAGS, DISABLE THE AIRBAG SYSTEM BEFORE ATTEMPTING ANY STEERING WHEEL, STEERING COLUMN, OR INSTRUMENT PANEL COMPONENT DIAGNOSIS OR SERVICE. DISCONNECT AND ISOLATE THE BATTERY NEGATIVE (GROUND) CABLE, THEN WAIT TWO MINUTES FOR THE AIRBAG SYSTEM CAPACITOR TO DISCHARGE BEFORE PERFORMING FURTHER DIAGNOSIS OR SERVICE. FAILURE TO TAKE THE PROPER PRECAUTIONS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT AND POSSIBLE PERSONAL INJURY.
Both the front blower motor resistor and the optional rear heater-A/C unit blower motor resistor can be diagnosed using the procedure that follows. For circuit descriptions and diagrams, refer to Air Conditioning/Heater in Group 8W - Wiring Diagrams.
  1. Disconnect and isolate the negative battery cable.
  2. Disconnect the wire harness connector from the blower motor resistor block.
  3. Check for continuity between each of the blower motor switch input terminals of the resistor and the resistor output terminal. In each case there should be continuity. If OK, repair the wire harness circuits between the blower motor switch and the blower motor resistor block or blower motor as required. If not OK, replace the faulty blower motor resistor block.
Here is the information on replacing the resistor:

REMOVAL
  1. Disconnect and isolate the battery negative cable.
  2. From the passenger foot well area, remove the two hex screws used to secure the blower motor resistor.
  3. Unplug the front blower motor resistor from the wire harness connector.
  4. Remove the front blower motor resistor from the HVAC unit.
Here is an exploded view of the HVAC box. The resistor is #63 in the picture and the actual part may appear slightly different:

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If any issues such as no voltage at blower connector or damaged or melted connector at the resistor then let me know.

Oct 19, 2008 | 2002 Dodge Durango

2 Answers

1996 ford taurus


If you can, check if there is voltage at the blower motor connector with the ignition on and the engine not running. If you have voltage, the blower is bad. If no voltage, it may be a bad blower switch, the blower motor resistor assembly, or the wiring between them.

The resistor assembly is on the evaporator housing under the dash on the passenger side and near the blower motor. The glove box must be removed to check this and the blower. A thermal limiter resistor is built into the resistor assembly and will open, ie melt, with excessive heat.

Without more details on this, it appears either your blower motor or the blower motor resistor assembly is bad.

Oct 07, 2008 | 1996 Ford Taurus

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