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Can a blower motor cause a resistor to burn out. The blower motor is working when i check it to the battery. Replaced the resistor worked for about 2 hours then it quit blowing. Why is the resistor going out instead of the fuse,( twice)

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6ya6ya
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Posted on Jan 02, 2017

  • 611 Answers

SOURCE: blower or resistor on 99 malibu?

the resistor gmpartsdirect.com usualy has good diagrams or go to the libruary n get a service book

Posted on Jun 14, 2008

  • 132 Answers

SOURCE: 2000 Pontiac Grand Prix interior fan speeds 1-4 not working

Check the ground, the resistors are accully resisnting the Negitive Current.

Posted on Jul 30, 2008

  • 37 Answers

SOURCE: Blower motor vent selection switch not working

the hvac selector switch in the dash may be the problem.You need to remove the switch and look at the connector on the back of switch,see if there are any burnt wires at the connector or switch.It's all electronic and the switches have been known to burn out on this and other model.

Posted on May 26, 2009

matney68
  • 426 Answers

SOURCE: trying to locate blower motor resistor in 1998 Jeep Grand Cheroke

blower resistor is right next to motor under passenger side of dash.

Posted on Jun 20, 2009

r_mcalhoun
  • 166 Answers

SOURCE: Blower fan resistor module replaced, worked for 2 days quit again

hi you probely have a draging blower motor. if it pulling more than 25 amps replace it and check akk wirring connectors for burn or hot spots. good luck

Posted on Jul 17, 2009

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1 Answer

Why does blower motor keep running on high, even when key is off?


GM's have been noted with wires burning and melting for the blower motor resistor plug, causing this issue and others.
link is not your exact car but shows whats invovled in checking and replacing plug and resistor
How to replace Blower Motor Resistor

Jan 18, 2016 | 1995 Buick Park Avenue

1 Answer

My 2003 suburban rear blower not working replaced blow it works jumped out check resister I have 12 v going to the resister but ony 1.7 volts to blower replaced resister worked for a week then stoped...


If your original blower burned up, or if the original resistor failed, it is likely that some of the wires leading to the resistor and blower BURNED slightly in the process, and will need to be replaced all the way back to where they connect to the fuse block. (The wires may have been pinched or otherwise damaged somewhere, so they no longer carry the amount of current required, causing the resistor to fail due to a low-voltage over-current condition.) Sadly a failed resistor can also burn the motor out. Check the windings of the motor (via the connector) using an ohmmeter to see if it is still good.

Jul 19, 2014 | Cars & Trucks

1 Answer

I have only high speed on my ac/heat switch. have replace acdelco blower motor resistor 2 times already. works for a while and quits. whatelse do I need to check etc?.


If you have replaced the blower motor resistor block twice all ready, i would be replacing the blower motor itself. When the blower motor is drawing too much current it burns out resistors for lower fan speeds in resistor block, but doesnt blow fuse for fan. Also check for leaves and stuff in fan when removing fan.

Jul 18, 2011 | 2006 Isuzu i-280

2 Answers

1996 astro chevy van heater use to work on low and med but wont work at all now.


The blower resistor has gone bad which is why you lost blower speeds.This may have been caused by the blower motor drawing too much power. At this point I would verify that no fuses burned out and then check the pigtail plugs going to the resistor and blower motor to make sure the connectors and connections are not melted or wiring is frayed. These connectors are located in the engine compartment on the passenger side. After checking this and if everything appears ok then the blower motor itself has probably gone bad and needs replaced. I would also replace the blower motor resistor as well. If the connectors appear damaged replace or repair as needed .

Jan 10, 2011 | 1995 Chevrolet Astro

1 Answer

The heater blower isnt working in my honda civic. i have replaced the control panel thinking it was that, but it still does not work there seems to be a live feed to the blower unit.i took the blower unit...


Check fuses 13 and 37. Also check relay and resistor. The relay is usually in the engine compartment relay box. It should click when the blower switch is turned on. The resistor will show signs of burning if it's bad.


RESISTOR REMOVAL & INSTALLATION The blower resistor is located on the front of the blower housing.

  1. Disconnect the negative battery cable.
  2. Remove the glove box assembly, if required.
  3. Disconnect the resistor wire connector.
  4. Remove the resistor attaching screws.
  5. Remove the blower motor resistor.
  6. Installation is the reverse of removal.
  7. Install the glove box if it was removed and connect the negative battery cable.
  8. 86b51f5.gif

Oct 24, 2010 | 1995 Honda Civic

1 Answer

Heater fan just quit working. Cant find a fuse for it anywhere. Checked the relay and the switch and they seem fine.


Blower Motor not working for all speeds or not at all.

What does it take to get air to come out the vents?

1. Power from the battery or alternator, wiring thru a fuse and possibly an accessory relay to the switch

2. Switch and wiring to channel voltage to the appropriate resistor corresponding to the desired speed

3. Resistor set to reduce voltage to the blower for settings less than high

4. Final wiring to blower and blower itself

Because there is usually no relay between the switch and the resistor, all of the blower current runs through the switch. This sometimes causes the switch to overheat and fail over time. Depending on how the switch is designed, the failure may allow multiple currents to run to the resistor pack, and this may in turn cause the resistor pack to overheat and fail. An example of the circuit I'm describing is shown below:


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Note that if the above switch was to contact both terminals 2 and 3 simultaneously, there would be more current than the resistor pack is designed for. This can burn the resistors and/or blow the thermal breaker. Also note that if the resistor pack fails, the blower can still run at full speed.

Troubleshooting: The last sentence above is a clue.

If your blower is working only on high speed, the likely cause is a failed resistor pack. However, because of the other discussion above, you should also troubleshoot the switch to see if it is the reason the resistor pack failed.

If the blower does not work at all, odds are that the problem is the fuse, relay, or the motor itself.

Repair: The resistor pack is installed in the air stream of the system to help cool the resistors. It is usually accessible from under the dash on the passenger's side or sometimes from the engine compartment along the firewall. It is identifiable by the connector with several wires coming out-some going to the switch and some to the blower motor. The resistor is replaced by unscrewing it from the duct and reinstalling the new resistor pack.

The blower is usually accessible from above the passenger

Sep 21, 2010 | 1984 Toyota Celica Supra

2 Answers

Fan blower does not turn on I replaced blower, resistor and even a relay but does not work. So I ran a power wire from battery to resistor and it works what can be the problem?


The heater control,where you turn it on,and off,pull it out,it is most likely burned up where the connector attaches to the switch,and the connector,will most likely have to be replaced.

May 18, 2010 | 1986 Oldsmobile Cutlass Supreme

2 Answers

Blower doesnt work on 1990 ford van e-150. I


most likely the blower motor! but could be the blower motor resistor! does it work on high setting? if so it is the blower resistor if not most likely the blower itself!

Sep 18, 2009 | 1990 Ford F150

2 Answers

Blower fan resistor module replaced, worked for 2 days quit again


HIGH RESISTANCE IN THE BLOWER MOTOR CAN CAUSE YOUR PROBLEM, OR A BAD RESISTOR.
THERE IS NO REAL GOOD WAY TO CHECK THE RESISTANCE OF THE BLOWER MOTOR.

Jul 16, 2009 | 2005 Chevrolet Malibu

3 Answers

I HAVE AN 06 H3 HUMMER the heater was blowing fine when I shut the car off ok, when I got back in and started it the heaters blower stopped. I have checked all fuses and relays and they are fine I even...


check the blower speed control, it most likely burned out, also jump battery power direct to the blower and see if it runs, if it does the speed control is defective, if it doesn't the blower motor is toast.

Jan 16, 2009 | 2008 Hummer H3

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