I found a complete 91 firebird at a junk yard and it has an electric fan. The guy told me 25$ for the fan/shroud piece. I want to put it in my 82fbird that curently has a belt driven fan. What all do I need to intregrate this system? "no switches".
Thanks
SSC

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The stud formerly know as SUPER-SPORT-CHEVY.
What happend to my password?
Oh well!

[This message has been edited by SSC (edited July 04, 2001).]

 

You probably already know what to pull; the fan shroud and the fan/clutch assembly.

As to a hands-free-operation, that's easy, too. You need to also nab the fan switch from the donor car. The switch grounds out when the coolant temp gets too high. If you can't reinstall the switch in it's "factory" location on your '82, you could buy a new thermostat housing (aka water neck), and drill & tap it to take the fan switch.

Once you've got the fan switch mounted, you need an "automotive SPDT relay". Any chain auto parts store should have those; they're a universal relay. If nobody knows what you're talking about, go to a car audio installation place; they use 'em all the time. If you're still out of luck, Radio Shack has 'em.

Next, pick up a fuse & fuse holder; it needs to handle the fan, so I'd guess 20 or 30 amp. You could use a fuseable link, too. Pick up another fuse & fuse holder to handle the fan-switch; this should be small, like a 5 amp fuse. Find yourself some 16 gauge wire, and some female quick-disconnect crimp connectors (unless you buy the socket for the relay). You'll need three crimp-on ring terminals, too, to connect to the car's power.

Wiring is as follows for the "fan" side:

1. Fan positive <---> Relay pin # 87a

2. Relay pin # 30 <---> Fuse holder or fuseable link <---> Ring terminal <---> Positive supply (starter, positive junction block, or right to battery).

3. Fan negative <---> ring terminal <---> chassis ground

Wiring is as follows for the "fan switch side":

4. Fan temp switch <---> relay terminal #86 (coil)

5. Relay terminal #85 <---> fuse holder w/small fuse (5 amp) <---> ring terminal <---> positive connection

This should get you going! The relay isolates the fan from the fan switch; and keeps you from drawing a ton of current (from the fan) through the fan switch. The wiring sounds worse than it is. Find a spot to hide the relay first, then lead all your wires. Good luck!


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-Tom P (Hot rodded 1986 Firebird 2.8l) from http://www.f-body.net/mailbag/3rd/3rd_mailbag.html message boards
---Think your car could be pic of the week? Visit http://www.f-body.net for details!

 

Thanks TomP,
Thats the exact info I need
SSC

 

SSC, You can also go a slightly different route. I purchased a stand alone circut/relay combination for mine. It's fully adjustable and can be wired in easily. Mine only took me about 15 min. I got mine at Schucks, but Kragen and checker are the same stores. $36 and comes with it's own sensor that slips between two radiator tubes. Works great, I have mine matched to a 180* thermo right now and it's set to come on at 190* and goes off at 200*.