I got a fan control module from an 06-11 crown vic for free.
these crown vics use a variable speed fan(not that good of one) and a "module"(what i have) to control it. The module has a fuse 40amp power wire, a large ground, and a signal wire going to it and the fan plugs into the other side of it. I plan on using it to run my Linclon Mark VIII fan...
From fords PC/ED crown vic book:
The PCM monitors certain parameters (such as engine coolant temperature, vehicle speed, A/C on/off status, A/C pressure) to determine engine cooling fan needs.
For variable speed electric fan(s):
The PCM controls the fan speed and operation using a duty cycle output on the fan control variable (FCV) circuit. The fan controller (located at or integral to the engine cooling fan assembly) receives the FCV command and operates the cooling fan at the speed requested (by varying the power applied to the fan motor).
EDGE/MKX, FLEX, MKS, MKT, TAURUS, FUSION/MILAN/MKZ, CROWN VICTORIA/GRAND MARQUIS, TOWN CAR: FCV DUTY CYCLE OUTPUT FROM PCM (negative duty cycle)
This guy on youtube provides some good info about it too:
Looks like the controller turns the fan on a certian percentage by using a "duty cycle" ground to the control wire that uses pulse with modulation to literally pulse a ground signal to it...The faster the pulse, the faster the fan goes.
I can wire in the rest of it....just power and ground, not even a relay using this setup, and the fan is never SHOCK on to full power.
My question is where do i get something to make a ground pulse to the module, that is adjustable, or better yet, one that will increase the pusles from a temp sensor and the temp goes up?
But Im not really sure how to wire it up. Looks like it has a power and ground that is suppose to go to the motor. Would it pulse power or ground?
This could be a CHEAP high quality fan controller that doesn't need to be monitored or turned on/off for any fan, if I can figure out how to controll it correctly.
Any help would be greatly apperciated. I am a professional mechanic, and good with electrical, but definitly not an electronics expert
Welded 14 bolt, HPKingpin D60 w/ lockright, ZF5, NP205, 4.88 gears, SMPFI 393 w/ EDIS(gufx strat), Chevy 52s Front, Inboarded Chevy 63s Rear, DOM heim steering, DOM cage, Saginaw pump, 3/8" fuel system, 200amp 3G Alternator....
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