Oil Temps.
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4wd Low
Joined: Jul 2022
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Oil Temps.
I have a 04 F250 ccsb 4x4 6.0 with a 7.3 fan clutch. I am pretty sure I have a bad one since I don't ever hear it come on. Is there a way I can manually hook up a switch with the 7.3 fan clutch?
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4wd Low
Joined: Jul 2022
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I still have factory oil cooler. I changed the oil cooler bypass valve and the oil Temps went down about 10°. Usually the ECT runs about 188-192°. The EOT will run any where from 219°- 230°, depending on style of driving. But when I take it easy or stop at a light, EOT will start going down after a couple minutes.
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4wd Low
Joined: Jul 2022
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And I know the 7.3 fan clutch isn't electrically controlled. I don't think mine works. I haven't ever heard the fan noise. I was just wondering if there was a way to wire in a switch until I had a chance to go in and change it.
Laughing Gas
Joined: Aug 2010
Posts: 1,049
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From: Amarillo, TX
7.3 clutch is viscous - engages more & more as airflow through the stack gets hotter. So if your ECT is running 188-192, fan is probably not fully engaging. Your oil temp issue isn't related to the fan. Might try backflushing the oil cooler?
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Laughing Gas
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Tuned
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I still have factory oil cooler. I changed the oil cooler bypass valve and the oil Temps went down about 10°. Usually the ECT runs about 188-192°. The EOT will run any where from 219°- 230°, depending on style of driving. But when I take it easy or stop at a light, EOT will start going down after a couple minutes.
Mountain Pass
Joined: Oct 2012
Posts: 233
Likes: 65
From: Southern Indiana
Flush the system before you put in the new cooler -- that way the junk is already out and does not plug the new cooler
May also want to try a back flush to buy a little more time on the old cooler -- but flush the system first
May also want to try a back flush to buy a little more time on the old cooler -- but flush the system first
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