manual fan switch

[AWSOMEFIREBIRD]

I know some one has posted this one before but i was wandering if anybody had the instructions and pics on the homemade manual fan switch mod

thanks

[HiArrival]

http://www.xious.com/camaro/index.html

[TheV6Bird]

<blockquote>quote:</font><hr>Originally posted by HiArrival:
http://www.xious.com/camaro/index.html<hr></blockquote>Can 3.4s use this, or is this a 3.8 only mod?

[HiArrival]

I not sure how the pin layouts are on a 3.4 but I have done it on my 3.8 2001 camaro and it works great. I think you would be able to do something similar but you'd have to find out what wires work your fan to tap into

[HiArrival]

A: The following instructions are for all mid-1994 to 1995 production models. Slide two wires into the underhood fuse/relay box in the D2 and J2 slots for the #1
fan relay (D) and #3 fan relay (J). Splice them together and run them through a 1 amp fuse. Hook another wire to the ground. Then, with the ignition on, connect the
ground wire to the spliced fan wires and both fans come on at high speed. When you're not using the setup, remove the ground wire and tuck it away so you can't
see it. The J2 slot is also connected to the F5 slot in the #3 fan relay, so you can use either one, it seems. This essentially provides the ground signal to the relays just
like the PCM would when FAN CNTL A10 and FAN CNTL A11 codes are set in the PCM. The relays click when you make the connection, so everything
should be working just like if the computer set both codes.

This set-up requires the ignition to be in the "On" position and requires no splicing/cutting of any stock wiring. This works great to cool off your car at the drag strip
especially when the engine is off.

1993 and early-1994 cars don't have dual speed fans and therefore have no #3 (J) fan relay. For these cars you can just round a ground to D2 for the primary fan
and F5 for the secondary one.

On 1996 and later models, the wiring has changed and the above procedure will blow the fan fuse and turn on the Service Engine Light. So instead, in the
underhood fuse box, remove the relay labeled 'F'. Molded into the plastic on the box itself where the relay was is the letter 'F' as well as numbers for each
connector. You want to connect the pin labeled '3' with the pin labeled '4'. Note that this is a real feed, and bypasses the relay, so use at least 14 gauge wire.
Current is 12A startup, and 8A running. Use a switch that can handle the load.

Solder the wires to the bottom of the fusebox, and put the switch just in front of the box where there already is a unused hole. Black wires and a black switch makes
it looks neat. With this setup, you can turn the fan on whenever you want, even with the engine off. Don't forget to put the relay back once you locate the correct
connections. Without relay, a code is set and the Service Engine light is lit. If you happen to get a light, it won't go away until you reset the computer. The easiest
way to do that is to disconnect the negative battery cable for about 1 minute.

[HiArrival]

A: The following instructions are for all mid-1994 to 1995 production models. Slide two wires into the underhood fuse/relay box in the D2 and J2 slots for the #1
fan relay (D) and #3 fan relay (J). Splice them together and run them through a 1 amp fuse. Hook another wire to the ground. Then, with the ignition on, connect the
ground wire to the spliced fan wires and both fans come on at high speed. When you're not using the setup, remove the ground wire and tuck it away so you can't
see it. The J2 slot is also connected to the F5 slot in the #3 fan relay, so you can use either one, it seems. This essentially provides the ground signal to the relays just
like the PCM would when FAN CNTL A10 and FAN CNTL A11 codes are set in the PCM. The relays click when you make the connection, so everything
should be working just like if the computer set both codes.

This set-up requires the ignition to be in the "On" position and requires no splicing/cutting of any stock wiring. This works great to cool off your car at the drag strip
especially when the engine is off.

1993 and early-1994 cars don't have dual speed fans and therefore have no #3 (J) fan relay. For these cars you can just round a ground to D2 for the primary fan
and F5 for the secondary one.

On 1996 and later models, the wiring has changed and the above procedure will blow the fan fuse and turn on the Service Engine Light. So instead, in the
underhood fuse box, remove the relay labeled 'F'. Molded into the plastic on the box itself where the relay was is the letter 'F' as well as numbers for each
connector. You want to connect the pin labeled '3' with the pin labeled '4'. Note that this is a real feed, and bypasses the relay, so use at least 14 gauge wire.
Current is 12A startup, and 8A running. Use a switch that can handle the load.

Solder the wires to the bottom of the fusebox, and put the switch just in front of the box where there already is a unused hole. Black wires and a black switch makes
it looks neat. With this setup, you can turn the fan on whenever you want, even with the engine off. Don't forget to put the relay back once you locate the correct
connections. Without relay, a code is set and the Service Engine light is lit. If you happen to get a light, it won't go away until you reset the computer. The easiest
way to do that is to disconnect the negative battery cable for about 1 minute.