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View Full Version : why not wire my Taurus fan to the electric fan wiring?


BustedS13
06-26-2008, 11:20 AM
the 240 came with a tiny electric fan. why not wire my Taurus fan's low speed to that wiring? wouldn't that greatly simplify the wiring process? the high speed is going to be on a switch.

g6civcx
06-26-2008, 11:23 AM
the 240 came with a tiny electric fan

Where? Are you talking about the ac fan?


why not wire my Taurus fan's low speed to that wiring? wouldn't that greatly simplify the wiring process?

Answer my questions above and I'll answer yours.

pbcstylez
06-26-2008, 11:25 AM
Where? Are you talking about the ac fan?




Answer my questions above and I'll answer yours.

I believe taurus low speed current draw may very well exceed the factory ac fan wiring. Not sure tho, g6 can u confirm?

BustedS13
06-26-2008, 11:37 AM
Where? Are you talking about the ac fan?




Answer my questions above and I'll answer yours.


yeah, the AC fan.

S-Nation S13
06-26-2008, 11:41 AM
http://www.zilvia.net/f/showthread.php?t=173441

here if you want approx. amp draw on your fans found it here

g6civcx
06-26-2008, 11:41 AM
I believe taurus low speed current draw may very well exceed the factory ac fan wiring. Not sure tho, g6 can u confirm?

Well, according to Nissan the condensor fan uses a green 30A fusible link.

here:

1995 Ford Taurus (3.8L)
Dual speed
low: ~2500 cfm, Amp draw ~23.75A
high: ~3800cfm, Amp draw ~46.5A

If these numbers are correct, I believe you'll be okay if you can check to see if current draw during startup doesn't spike above 30A.

TanaMU
06-26-2008, 11:49 AM
Lots of people do that. Here's a writeup detailing how to do it best. http://www.nicoclub.com/articles.php?id=242562


I run my own efan like this. It's a huge 16" mother of a fan I got from a buick in the junkyard. 1.5 years and counting, no problems with the wiring.



Also just for the record, if the numbers in that other link posted are correct, and the tarus fan does draw 46 amps when on high.. Well, the alternator is only capable of generating about 70 amps and you need 20 or so amps to properly run the engine and stuff, so..

Cloud9
06-26-2008, 11:55 AM
You also live in canada, it cant get that hot there. but anyways, does the ac fan turn on only when the ac is on, or just any time the car gets to a set temp?

GSXRJJordan
06-26-2008, 11:57 AM
I wired my electric fan (on my s13, not the S14) like that, no problems there, but it was nowhere near the reported current draw of the Taurus fans.

Remember that the AC fan relay uses a switched ground, so you provide 12v constant and the fan gets a ground when the relay clicks on (after getting it's ground from the blue/orange? wire).

TanaMU
06-26-2008, 12:23 PM
You also live in canada, it cant get that hot there. but anyways, does the ac fan turn on only when the ac is on, or just any time the car gets to a set temp?


http://maps.google.com/maps?f=q&hl=en&geocode=&q=vancouver,+washington&ie=UTF8&t=h&z=11&iwloc=addr

Close enough I guess. But it does fine in stop and go traffic in the summer, so what more can I ask..

Anyway the AC fan is set to turn on when the AC is on, OR the ecu can turn it on if the engine gets hotter than 220*F.

mjjstang
06-26-2008, 12:35 PM
I am not sure about those numbers.
I just put a taurus fan in and first off let me tell you everybody needs one of these, this was the best thing I ever have done. 20 bux and simple wiring.

I had some trouble at first though, had a 30 amp fuse with 30 amp relay on high and it blew the fuse, I put a 40 in and no trouble, the relay started melting though so I went to radio shack. They have a 40A relay rated for 60A non-motor current. So I figure it will do the job, but still my 40A fuse has never blown, and it is HOT up here right now so I use high all the time. So those current draw numbers may be off that was posted above. I hear it is continuous 33A. anyway....

I wired it to a DPDT switch with 2 relays, Nothing fancy but it does the job, switch high on hot days low on others. not too much trouble, and it stays around 180.

BustedS13
06-26-2008, 02:18 PM
Lots of people do that. Here's a writeup detailing how to do it best. http://www.nicoclub.com/articles.php?id=242562


I run my own efan like this. It's a huge 16" mother of a fan I got from a buick in the junkyard. 1.5 years and counting, no problems with the wiring.



Also just for the record, if the numbers in that other link posted are correct, and the tarus fan does draw 46 amps when on high.. Well, the alternator is only capable of generating about 70 amps and you need 20 or so amps to properly run the engine and stuff, so..

i only plan to use the high speed for cooldown after a lap or what have you. definitely not daily.

so the ac fan only kicks on above 220? that seems a little high, doesn't it?

pbcstylez
06-26-2008, 02:22 PM
220 is high in my opinion.

Why don't you run a thermostatic switch, or a manual switch this way you can manually still toggle the fan during your cooldown or what not.

TanaMU
06-26-2008, 02:32 PM
Yes, it's 220. You can see it in the code if you open up the stock bin. It's just a safety measure, to try to help try to cool it off if it overheats. The AC fan was never meant to actually help cool the car. That's what the clutch fan is/was for.

If you do rom tuning you can alter it and lower that temp from 220 to say.. 175 or 180.


Check the link I posted there, it shows you how to wire up a bigger fan to the AC fan wiring, then wire in a thermostatic switch and a manual switch to force it on regardless of the temperature.