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Joined: Jul 2002
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From: Kingsland, GA
I put a dual electric fan setup on my 2000 Rnager when I had it.... As it was the 4 banger, it helped enough that you could feel it, not to mention it quieted the engine down, especially in warm temperatures. If you're going to do it, I suggest 3 things...
1. Remember to put an override in it to turn it on when the AC is running, of your AC won't work hardly at all at low speeds and stopped. The fan that runs for the AC should be the top one (if you have 2. If you only have one, mount it high on the radiator), or else it won't do you any good (air needs to be drawn across the top of the AC condenser in front of the truck to condense the hot refrigerant gas coming from the compressor). Reference your Haynes manual to find the wire in the climate control stack that is hot when the AC system is active. (Remember, the AC system works in more modes than just AC i.e. defrost)
2. Put an interrupt in the system to kill it when you turn the ignition off. I overlooked this when I designed my system, and found out that the fan would run for 20 minutes or so on and off after the truck was shut down. While it never drained my battery, it was annoying, and, IMO, unprofessional. I added it later.
3. Put a manual switch override in the dash to turn the fan on if the temperature control system fails (my thermostat never failed, but one of the relays in my system did. Had it not been for the manual switch on the dash, I'd have been stuck)
I think I ended up spending a tad over 300 when I did mine, and by the time it was done, the wiring and relay setup was pretty complex. You have to remember that you have to make up for all the computer controls that are in cars equipped with electric fans from the factory using simple relays and wiring. In the end, though, it was worth it, if only for the experience, definately for the freer revving engine and slightly increased mileage. And sorry, I used to have directions and pictures written up, but got rid of them awhile ago... If you are unfamiliar with wiring, relays, installing fuse panels, ect, I suggest you leave the design and part of the construction to an automotive electrical expert....
1. Remember to put an override in it to turn it on when the AC is running, of your AC won't work hardly at all at low speeds and stopped. The fan that runs for the AC should be the top one (if you have 2. If you only have one, mount it high on the radiator), or else it won't do you any good (air needs to be drawn across the top of the AC condenser in front of the truck to condense the hot refrigerant gas coming from the compressor). Reference your Haynes manual to find the wire in the climate control stack that is hot when the AC system is active. (Remember, the AC system works in more modes than just AC i.e. defrost)
2. Put an interrupt in the system to kill it when you turn the ignition off. I overlooked this when I designed my system, and found out that the fan would run for 20 minutes or so on and off after the truck was shut down. While it never drained my battery, it was annoying, and, IMO, unprofessional. I added it later.
3. Put a manual switch override in the dash to turn the fan on if the temperature control system fails (my thermostat never failed, but one of the relays in my system did. Had it not been for the manual switch on the dash, I'd have been stuck)
I think I ended up spending a tad over 300 when I did mine, and by the time it was done, the wiring and relay setup was pretty complex. You have to remember that you have to make up for all the computer controls that are in cars equipped with electric fans from the factory using simple relays and wiring. In the end, though, it was worth it, if only for the experience, definately for the freer revving engine and slightly increased mileage. And sorry, I used to have directions and pictures written up, but got rid of them awhile ago... If you are unfamiliar with wiring, relays, installing fuse panels, ect, I suggest you leave the design and part of the construction to an automotive electrical expert....
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