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jimmycola

jimmycola 4/7/2010

1993 Honda Civic LX 4 Cyl 1.5L

Preventive Maintenance

When replacing a blower motor on my civic lx i understa i have to replace the resistor and where is the resistor located

where is the resistor located on my 93 honda civic lx 4dr i will be replacing the blower motor for the A/C

7 Answers


Bobby

Bobby 4/7/2010

well you shouldn't have to replace it if the problem is the blower motor. If the resistor if both are bad then ok. its pretty simple to find just follow the wire from the blower motor it should go from the blower motor to the resistor and it will be close by mounted to the box in the same area as the blower motor

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jimmycola

jimmycola 4/9/2010

Thanks but Is there a way to tell if the resistor is bad?

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Bobby

Bobby 4/9/2010

Sure is, disconnect the connector to the blower motor, turn the fan on in the vehicle, then run through the speeds while testing the power at the electrical connector to the blower motor. The lower the speed the more resistance there will be thus lower voltage. If there are any speeds that are not working put it on that speed if there is no voltage then the resistor has burnt out.

The voltage should raise as you increase the fan speeds. If it does not raise each time and one of higher speeds drops in voltage then its a bad resistor.

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jimmycola

jimmycola 4/10/2010

if i replace the blower motor and NOT the resistor and the resistor actually IS bad will it ruin the blower motor? I really appreciate your help. By the way all the speeds work on the switch but i haven't tested the voltage so does that mean the resistor is any more likely to be fine?

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Bobby

Bobby 4/10/2010

If all the speeds work as they should then the resistor should be fine. If you checnge the blower motor and the resistor is bad it shouldn't affect the blower motor. If it was the resistor you will just have the same problem you were all ready having. Then you'll want to go ahead and change the resistor

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jimmycola

jimmycola 4/15/2010

I removed the blower motor. The wheel-fan that went above it was broken but only so as it connects to the blower so it probably won't turn the wheel (fan) anymore. I then put it all back together and now with the car on AND with the A/C power ON (green lightted button) I get a sound from under the hood sounds like a fast grinding type sound with the A/C power button OFF it goes OFF I am going to hook the blower motor electric plug up to a volt tester as you suggested. I just don't know where the resistor IS?

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jimmycola

jimmycola 4/15/2010

I went through the speeds on the motor while it was out there was a difference between each but barely I am about to give up your help is greatly appreciated,.. what do you make of it?

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