Electric Fan Install - Performance Products

Sam started the assembly by using a drill to screw the thermostat onto the fan mold.
Keeping everything clean and the wires hidden, Sam drilled small holes into the fan mold and ran the wires inside the mold, rather than have them stick out on the outside.
Keeping everything clean and the wires hidden, Sam drilled small holes into the fan mold a
As you can see, the wires were secured with zip-ties and all wire connections were crimped and properly spliced with heat-shrink tubing.
As you can see, the wires were secured with zip-ties and all wire connections were crimped

After drilling two more small holes from the inside out, Sam ran the positive and negative wires from the fans to the thermostat.
After drilling two more small holes from the inside out, Sam ran the positive and negative
He was then ready to mount the fan, but first we bolted on the Ford F-150 specific mounting brackets to the fan mold.
He was then ready to mount the fan, but first we bolted on the Ford F-150 specific mountin
It was now time to slide the fan into place.

Using a ratchet and Allen sockets, the fans were bolted into place.
The fit was precise, and we were impressed with the overall look of the new fans.
We weren't kidding about the added room inside the engine bay without the large fan clutch clogging things up. Sam double-checked the fan blades to make sure nothing was close to them inside the engine bay.
We weren't kidding about the added room inside the engine bay without the large fan clutch

This small probe is the thermostat sensor for the fans. It tells the thermostatic controller when to kick on the fans at a temperature that you can adjust from 180 to 240 degrees.
This small probe is the thermostat sensor for the fans. It tells the thermostatic controll
The probe was inserted into the fins of the radiator and the small wires connected to the thermostat.
The probe was inserted into the fins of the radiator and the small wires connected to the
Wiring the fans was the next step. Sam traced down a key-on power source to trigger the fans, spliced into the A/C wiring harness to insure the fans kick on when the A/C is running, and then found an appropriate 12-Volt and negative post. This relay makes sure no damage will be sent to the fans in case of a power surge or short.
Wiring the fans was the next step. Sam traced down a key-on power source to trigger the fa

Here is a glimpse at the wiring for the thermostat. We were now ready to fire up the Ford and see how the fans worked.
Here is a glimpse at the wiring for the thermostat. We were now ready to fire up the Ford
Pulling 5,500 cfm of air, the fans kept the F-150 nice and cool and kicked on at the predetermined thermostatic setting.
Pulling 5,500 cfm of air, the fans kept the F-150 nice and cool and kicked on at the prede

From the Driver Seat
Our test 4.6L V-8 had around 60,000 miles on it, and we were impressed with how it responded to the electric fan install. Although, we weren't able to strap it on a dyno, a noticeable seat-of-the-pants improvement was felt and we gained a little over 1 mpg. The fans are a little loud at a stoplight, but with that said, it is nice seeing the cooling gauge stay in the "cool" zone, even while towing and stopped. Overall, the installation of the fans went nice and smooth, and Sam had us back on the road in less than 3 hours.

YOUR QUESTIONS ANSWERED:
Time Spent Working:	3 hours
Degree of Difficulty:	Intermediate

Tools Needed:
Extra large wrench (or air chisel), Allen sockets, drill and small bits, wire crimpers, and metric wrenches

PART USED:
Flex-a-lite dual electric fan for '97-'03 F-150 V-8, pn 270	$549.95

(Price from performanceproducts.com)

SOURCE
Bogart Automotive Mission Viejo CA	Performance Products 8000 Haskell Ave. Van Nuys CA 91406-1321
Flex-A-Lite 8-00/-851-1610 www.flex-a-lite.com

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