manual fan control - Page 42 - Ford Powerstroke Diesel Forum
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post #411 of 450 Old 05-23-2016, 09:49 AM
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Did this mod prior to the start of camping season, and it worked awesome. I pull a 10k lb fifth wheel from between 5000 and 9000 feet above sea level and the temps would constantly rise to the 225-230 mark at which point I would have to pull over and let it cool down (15-20 degree delta normally 5-10 normally without load). I do have a fairly new oil cooler (OEM), EGR delete and running the DEAC Cat Coolant. I used this prior to several large hills or in the flats when it got to 220 or so, would decrease the oil temp to 210 in 5-10 minutes. the Delta would regularly be 20 degrees, however I understand that is OK when towing generally speaking.

Anyway, Thanks for the Mod.
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post #412 of 450 Old 05-23-2016, 09:51 AM
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Quote:
Originally Posted by joeshmoe View Post
Even easier since you won't have to wire in a relay. It's as easy as it gets.

Buy a basic on/off switch, 3/4" self tapper screws, a pack of blue scotchlok tap connectors, some 16AWG wire (black or blue, maybe?). Locate blue wire in fan harness (somewhere near intake elbow), insert new wire going back to switch into connector, along with fan wire. Crimp closed. Section of loom is optional. Recommend using electrical tape to prevent corrosion. Run wire back to or through fire wall (use existing pass-thru wire if equipped). Mount switch at position of your choice, connect fan wire to one pole, connect other to ground somewhere under dash with self tapping screw. Done.

Did I miss anything?
This is essentially what I did, I would recommend using a 2 pole switch instead of a 3 pole, for simplicity's sake.
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post #413 of 450 Old 03-14-2017, 09:42 PM
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Would this be the correct way to manually control the electric fan on a 6.0 ? Would switching the blue wire to ground turn the fan on ? Would turning the switch off return the fan back to computer controlled operation ?
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post #414 of 450 Old 03-14-2017, 09:54 PM
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Quote:
Originally Posted by doubleslottedflaps View Post
Would this be the correct way to manually control the electric fan on a 6.0 ? Would switching the blue wire to ground turn the fan on ? Would turning the switch off return the fan back to computer controlled operation ?
Yes switch on (ground) 100% fan on, off whatever the computer wants.


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E̶a̶r̶l̶y̶ ̶2̶0̶0̶3̶ ̶6̶.̶0̶ ̶E̶x̶c̶u̶r̶s̶i̶o̶n̶ ̶f̶u̶l̶l̶y̶ ̶b̶u̶l̶l̶e̶t̶p̶r̶o̶o̶f̶e̶d̶,̶ ̶1̶5̶5̶/̶3̶0̶ ̶i̶n̶j̶e̶c̶t̶o̶r̶s̶,̶ ̶K̶C̶ ̶S̶t̶a̶g̶e̶ ̶2̶,̶ ̶a̶n̶d̶ ̶a̶ ̶l̶o̶t̶ ̶o̶f̶ ̶o̶t̶h̶e̶r̶ ̶s̶t̶u̶f̶f̶.̶ Cummins swap in progress. Thanks to everyone on the forum I have learned a lot.
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post #415 of 450 Old 05-05-2017, 06:43 PM
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Sorry if this seems stupid but why does it make a difference if you ground blue on engine side or ground on fan side? The pins don't go straight through in connector?
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post #416 of 450 Old 05-05-2017, 06:45 PM
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Quote:
Originally Posted by ed2hess View Post
Sorry if this seems stupid but why does it make a difference if you ground blue on engine side or ground on fan side? The pins don't go straight through in connector?
The pins go straight through but IIRC (been a while have a 7.3 clutch now) the wires on the fan side are a different color than the engine side.
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E̶a̶r̶l̶y̶ ̶2̶0̶0̶3̶ ̶6̶.̶0̶ ̶E̶x̶c̶u̶r̶s̶i̶o̶n̶ ̶f̶u̶l̶l̶y̶ ̶b̶u̶l̶l̶e̶t̶p̶r̶o̶o̶f̶e̶d̶,̶ ̶1̶5̶5̶/̶3̶0̶ ̶i̶n̶j̶e̶c̶t̶o̶r̶s̶,̶ ̶K̶C̶ ̶S̶t̶a̶g̶e̶ ̶2̶,̶ ̶a̶n̶d̶ ̶a̶ ̶l̶o̶t̶ ̶o̶f̶ ̶o̶t̶h̶e̶r̶ ̶s̶t̶u̶f̶f̶.̶ Cummins swap in progress. Thanks to everyone on the forum I have learned a lot.
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post #417 of 450 Old 05-05-2017, 06:57 PM
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@Master_Chase is correct. ...and your question is valid.

That said... I would think that most people would want the mod to stay on the truck side. Someone could have an inline switch to a rigged fan clutch, though - leaving the original fan ummolested.

The big grounding no-no - IMHO - is to run the ground from the switch directly to somewhere behind the dash. Convenient, yes. But, that creates a long path for a relatively high current circuit. ...and an invitation for ground loops.
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BPD oil cooler relocation and upgraded EGR cooler (spooled), BPD oil bypass filtration, aFe Magnum Force CAI, Mishi radiator, 7.3L fan clutch, EC1 ELC, XDP coolant bypass filtration, '08 trans pan/filter, PTP direct clutch solenoid, blue spring, 6.4 starter, MBRP y-pipe, BD boots/clamps, '05 intake elbow, ccv reroute, Torque Pro + OBDLinkô LX, Autometer EGT
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post #418 of 450 Old 05-05-2017, 08:33 PM
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Quote:
Originally Posted by djmaguire View Post
@Master_Chase is correct. ...and your question is valid.

That said... I would think that most people would want the mod to stay on the truck side. Someone could have an inline switch to a rigged fan clutch, though - leaving the original fan ummolested.

The big grounding no-no - IMHO - is to run the ground from the switch directly to somewhere behind the dash. Convenient, yes. But, that creates a long path for a relatively high current circuit. ...and an invitation for ground loops.
Here's a few ground loops for ya
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2005 Explorer XLT 4x4 Mountaineer,
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1993 F150 4x4, 302 5 speed, winter truck


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post #419 of 450 Old 05-05-2017, 08:43 PM
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I bet it doesnt have "doubleslottedflaps" !
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post #420 of 450 Old 05-05-2017, 09:05 PM
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Quote:
Originally Posted by doubleslottedflaps View Post
I bet it doesnt have "doubleslottedflaps" !
If it did then it'd prolly have a nose wheel instead of a tail wheel and you couldn't ground loop it

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