fan clutch, cut wires, repaired - Ford Powerstroke Diesel Forum
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Old 01-21-2014, 03:54 AM
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fan clutch, cut wires, repaired

I just thought I would add this information, since I had read some conflicting information about fixing a fan clutch wiring harness.

I had the fan clutch and radiator replaced in the fall, and it worked fine for a while, but then truck shut down for unknown reason; no ECM communication. Turned out to be a blown ECM power fuse. Drove it for a few weeks, and it blew one more time, then no problems for a few months.

Had it in for a check up, and the shop said fan clutch had failed.I checked the wires, and they had been cut by the fan. When I touched the harness end inside the rad shroud, it blew the ECM fuse again, so I unplugged the connector, replaced the fuse and was good to go.

This weekend, I got in there and found that the fan clutch wiring was just hanging down, but not broken off of the metal disk in the center of the fan clutch, so I went to work soldering and lengthening the wire harness by about 4" so it could be spaced away from the fan blades and closer to the radiator.

Since it's cool here, fan doesn't come on, but I don't want to wait until it needs to work to fix it, so here's a pic. Seems to be working, since no more codes.

I found that there were 5 wires used, but 6 inside the plastic insulation. The blue wire was not connected, and seemed to be a nylon thread inside rathert than copper wire ( ?? ). So, I'll update this thread when I have a chance to get the fan to come on.

Cheers.
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Old 01-21-2014, 12:29 PM
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yes the blue wire is NOT supposed to be connected. You are good to go... My wire got cut in half as well and I had to do the same thing a little bit ago
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