Blower motor crapped out

[DieselDetroit]

Hey guys, I had only high for my blower motor for a while. I replaced my resistor and that solved the problem. Well a month ago my resistor crapped out bringing me back to only "HIGH" setting for my blower.

Just last week, high doesn't work anymore. Anyone have any troubleshooting tips? When I go from off to high I hear a relay clicking........ Is it my motor? Any help appreciated

Thanks



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[GMC1994K1500SierraSL]

Check the resistor again? Maybe ohm it out, and check the motor?


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[95Escahoe]

Sounds like the resistor might have crapped out again, if the motor works on high I'd think your issue is somewhere else but check that out too

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[great white]

You need to find out why you are popping resistors so frequently.

Either cheap replacements or bad connections somewhere would be my starting point guess....

 

[twomanymontes]

Also check the motor, If it's taking too much amperage to run, it will take out multiple resistors. Can also be high resistance be the connections at the motor, the resistor or the internal windings.

 

[someotherguy]

100% what he said about the motor - a blower motor going bad is usually what takes out the resistor, because it's drawing too many amps. You replace the resistor and it runs a while longer, then croaks again. In high speed the resistor is not used; the power goes right through it. No fan speeds at all, especially no high speed, the problem is outside the resistor. The click you're hearing is the high speed fan relay. The motor or a connection somewhere will be the problem.

Richard

 

[thunderstruck]

Just because the relay is clicking does not mean it is functioning.

 

[454cid]

Mine burned up the positive connector on the motor...... well actually the switch burned up first. The connector at the blower looked fine, at the time. Later when the switch started going again, I found the connector at the blower to be crispy.