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Radiator Fan Fuse keeps blowing


Active member
Aug 29, 2019
Los Angeles, CA
I just finished wiring up my 12inch puller fan and running it successfully however the fuse blew. Pins 1-6 (resistor) are together, 2-5 are to the thermosensor and 4-6 are to the spal. I replaced the fuse and ran both fans SPAL puller and stock A/C pusher and the fuse blew again. Tested the voltage to the fuse and its making 26volts. It should be 12v correct? I tested another part of the car and saw it was also pulling double than the recommended voltage.

Is there an issue with the grounding of my car then?


Well-known member
Apr 23, 2004
Are you sure the meter is set on DC and not AC voltage?

As for blowing fuses, check for a short somewhere...especially on those areas where you ran the wire to be sure it didn't get chaffed, squished or otherwise exposed (where it can ground/short).

[EDIT - does it blow the fuse right away, or after it runs? Start-up of an electric motor, namely the fan, generally requires a lot of amperage. Are you sure the fuse is proper rating?]
Last edited:
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