Taurus Fan Mod??
I like electric fans because I dislike mechanical fan clutches even more. I've had them sieze for no reason, spin freely for no reason (thus useless), and in one vehicle I had one fall apart somehow and the fan spun it's way into the radiator, increasing the cost of the repair 10-fold.
Electric fans can be on-off, fast-slow-off and some of the newer ones are actually totally variable speed based on the temperature. That means they're quiet when your truck is "warm" and noisy when it's "hot". If you like variable speed this is accomplished by building a "PWM Controller" that takes it's input from a variable resistance temperature sensor. It's a fairly easy circuit to build and works with any DC motor that you'd find in an electric fan made in the last 20 years.
I happen to like the dual-fans moreso... one big fan controlled by the ECM as one would expect, and the smaller fan that is "always on" when the AC is running or you flip a manual switch - kinda like an emergency fan. I have this view because our Crown Vic has one giant fan, and for months they kept burning out leaving our car, at highway speed, 100 miles from the house, without any fan whatsoever. And you know how that turned out each time.
Another advantage of electric fans is they are often much shallower dimensionally than the mechanical fan and clutch mounted on the water pump pulley - meaning you can shove a larger/longer engine in a smaller engine compartment than should be there. Guys who slap small blocks of any brands into triumph, spitfires and other small cars have done this for years.
There are also "pusher" fans, which sit on the front of the radiator and blow air into the radiator rather than suck air through it from behind. Those are less common in the junkyard and offhand I can't think of who makes that configuration... volvo, jaguar, something like that. Anyway, that gives even more clearance.
This is how several years ago various friends and I shoved an EFI 460 into a 92 (or 93?) Explorer 4-door. Electric pusher fan. The waterpump pulley bolts were about an inch from the fins of the radiator - no room for a mechanical fan, or even an electric fan. It was a fun project but there was a lot of maintanence hassles afterwards - impossible to change spark plugs, break a motor mount and the hood, fenders and radiator were toast, and so on.
Cons: More stress on the alt. when the fan is turned on, cost
This mod is particularly beneficial to those that do not have AC (or anything else covering the front of the raidiator) and those that don't drive much in heavy traffic. This is because with the AC condensor covering the raidiator the air gets heated up and/or slowed down (depends if AC is on or not) prior to entering the raidiator thus meaning that the fan has to be on alot of the time to ensure adaquate cooling and if thats the case you might as well stick with the mechanical fan. If you do lots of stop and go driving, the fan has to be on alot too. For those without AC and those that do alot of highway driving etc. the fan is almost never on and those folks really get to reap the benefits of this mod. If the fan will have to be on most of the time, you might as well pass on this mod due to the load that the alt will put on the motor and the load that the fan will put on the alt...compared to the likely lesser load that the mechanical fan puts on the motor. If the fan rarely has to be turned on then go for it!
Last edited by eco; Jan 12, 2008 at 10:28 PM.

The cost of all the parts (including the junkyard fan) ended up costing me a bit over $100 and in my opinion it was WELL worth it. You do need to make sure that you've got a big enough alternator if you're going to use the Taurus fan because, while it pulls A LOT more air than most fans of similar size, it also pulls A LOT more amps too
You'll need a 3G alternator at the very least; my 95amp 3G can keep up with the high speed but just barely. Low speed - no problem. If you wanna do this mod then you can email me on skandocious at gmail dot com. The mods have restricted me from using PMs for a while so that won't work
Good luck brother.
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But yes, good memory eco. On a real hot day I did usually turn it on if traveling less than about 30 mph but it would have to be for a very extended period of time and on a VERY hot day; and that's the LOW speed by the way. Even on a nice 70-80* F day it does not ever need to go on. I've come to realize that the high speed is pretty much useless, and I'm actually a bit disappointed that I wired my A/C to turn on the high speed, the low speed is MORE than enough unless there's its a super hot day and I'm sitting in stop and go traffic.
Anyways... Moral of the story, it's almost never necessary to turn on the fan, especially if you drive mostly on the freeway like me.
http://www.dccontrol.com/0820.htm
Here is a good write up on how to clean fuel injectors.
3G Alternator
And Finally the Electric Fan
I know these are on Fox Body stangs but they may help you along the way. I plan on doing this very same mod on my truck in the 3 months.



