Question about 1999 Buick LeSabre

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Every time i put heat on it blows a fuse i have already replaced fan motor

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The only thing I can think of that would blow the fuse after replacing the blower motor with a NEW one... is the blower motor resistor going bad.

Posted on Sep 29, 2010

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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.

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Heater fan in 1991 Pontiac sunbird stopped working. We have replaced fuses, and the fan motor. Still not working, continues to blow the fuses. What to do?


Replace the blower motor resistor assembly. To locate the electrical connector for the blower motor resister, it is usually attached to a heating or air conditioning Duct, or the blower motor case. You can also trace the Purple Wire from the blower motor back to the resister. Also make sure that the blower fan is not jamed up with somthing in side and will spin freely,or binding same thing, this will also cause the fuse to blow right away. And does the motor actually spin a bit before it blows the fuse or does it blow the fuse at the same time the switch is turned on? Good Luck and have a good XMASS.

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My 95 dodge neon keeps blowing its 20amp fuse heat comes out but the fan will not keep working?


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I turn the the fan on for the heating but the fan


Sounds like a seized up (bad bearings) blower motor. It may not pull enough current to blow the fuse at the lower fan settings but does at the high one. Something could also be jamming the blower fan in its air duct.

Most blower motors can be accessed under the hood. Replace the fuse then put the blower switch on one of the lower settings (don't blow the fuse). Get yourself a good sized screwdriver and hit the back of the blower motor with the screwdriver handle a couple of times.

Sometimes (unless the blower motor has totally seized up) you can get it to spin and this will tell you for sure you need a new blower. Other than that, you can get a spare blower motor, remove the connection wires from the old motor and hook them up to the new one to test before you go to the trouble of replacing the blower.

Hope this helps you out... -Dan

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My fan fuse blows when it gets hot


About the only thing that would cause the fan fuse to blow is either the fan has a problem and is dragging or a short in the wiring. I would bet the fan motor is probably bad. The hoses and thermostat have nothing to do with the fan motor fuse blowing.

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CHECK ENGINE LIGHT ON, AUTO ZONE SAYS COOLING FAN SHORTAGE


If the fuse is blowing there is too much resistance in the cooling fan moter. Replace JUST the cooling fan motor and the fuse. The A/C always turns the cooling fan ON when turned on. That is why the A/C messes up when the fan motor is bad. Replace the fan motor and the A/C problem will be fixed too. :)

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