Mark Houlahan
Tech Editor, Mustang Monthly
March 1, 2001

Step By Step

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The CoolPower Supercool electric fan kit comes complete and ready to install. The TIG-welded aluminum space frame has the fan motor assembly preinstalled, and all hardware and wiring come clearly labeled in installation bags.
After disconnecting the battery and removing the stock fan, it is necessary to modify the stock fan shroud to accommodate the Cool-Power fan. The shroud’s mounts must also be reinforced to support the extra weight of the electric fan. The finished installation of the fan into the shroud should look like this. Clean, isn’t it?
Mounting the temperature switch requires drilling a hole in the top of the thermostat housing (unless your housing has a pipe plug already installed, in which case you simply install the sensor in place of the plug). While it is possible to do so on the car, we opted to remove the housing. Partially drain the cooling system and remove the two 1/2-inch mounting bolts. Unplugging the TFI module on the distributor and using a short, open-end wrench can access the lower bolt.
Here is a close-up of our relays and their wiring all completed. All that is left is to connect the temperature sensor to a 12-volt switched circuit (under the dash) and connect the A/C relay to the A/C clutch circuit. The illustrations and instructions guide the way. 5.0

5.0 Mustangs were designed to run relatively hot with a 193-degree thermostat installed in them from the factory. Running these engines at higher temperatures, combined with emissions devices and a somewhat lean fuel curve, is what allowed these engines to pass emissions--at least that's what the Ford engineers envisioned. But when a Mustang owner takes the engine's performance outside of Ford's parameters with high-performance parts such as heads, camshafts, and intakes, the 193-degree thermostat usually gets the boot in favor of a 180- or 160-degree unit. While these will help sometimes, other forms of extra cooling are often needed. Larger radiators, synthetic cooling mediums, and other fixes are commonly found under the hood of a hopped-up 5.0.

One area that many owners don't think too much about is the factory clutch fan. This fan, too, was designed for stock usage and may not handle a performance engine. One of the most popular ways to increase your cooling benefits over the stock clutch fan is to replace it with an electric fan.

There are several different types of fans on the market--from low-buck to outright dangerous--but we like the CoolPower series of fans from Interactive Systems & Technologies. These well-thought-out fan systems utilize the factory fan shroud as the mounting device for a near-stock look with no bulky brackets or other obstructions. The kits come with all required parts, wiring, and connectors and can be installed in just a few hours.

There are two CoolPower kits to choose from. The standard kit is designed to flow 2,200 cfm of air and comes with a 195-degree temp switch (160 and 180 are optional), and the Supercool fan kit is identical to the standard kit except it flows 2,800 cfm and requires a 130-amp alternator conversion.

Since our '93 sedan was wearing a Holley SysteMAX II combination, as well as exhaust enhancements and a Nitrous Works nitrous kit, we opted for the Supercool model. Our '93 already had been converted to a 130-amp alternator courtesy of a Performance Distributors [(901) 396-5782] conversion kit, so we were ready to go for the higher output of the Supercool fan.