Hey guys i just did the fan mod, took me about 2 hours with me being extremly cautious the whole time. (could easily take 1/2 that time or less). I rigged up two switches next to the rear defroster, white for low, red for medium speed looks very clean, very mysterious to someone who doesntknow what the switches do, and its a very easy mod. Here is the how-to...
http://rx7.voodoobox.net/howto/fanswitch/fanswitch.html
total cost was less than 15 dollars, 3 for each switch, like 5 for the wire, and 2 for the connectors.

anyway im done now.
-stephen

edit: i drilled holes into the fake switches!

 

sounds cool got any pics of the switches ?

 

Any generic Radio Shack switches will work. Just pick out the ones you like.

 

Ummm, all you needed to do was replace the thermoswitch with an OEM stock Miata unit.......takes ten minutes. But HEY, whatever works!

 

nah i dont have any pics of them installed in the car, if you want i can give you a link to what they look like on radio shack's site. i may take some pics tomm.
-stephen

 

and then?

BTW: When did you get your FD. If this was not one of the first mods you did, naught naughty

 

I got it in april, the first mods were the dp, high flow cat, boost and air fuel gauges.
-stephen

edit: i still gotta get the AST and Radiator...

 

I did this fan mod as well. I use a single three position switch from digi-key. The forward position is low speed, the rear position is medium speed (makes the alt belt squeek a little, big power there!), and the middle position is off. It's a small black switch that I put into the middle position on the center console. Looks good. Anyone want pics?

anyone?

 

i still don't know why you really need the fan mod...was mazda that incomptent (spelling?) to make the fans on turn at too high a temp? i asked a while back if the later models in japan had the fan temp set lower on the ecu and i think somebody said no. so after several years mazda still hasn't turned down the temp, so why are we so worried about it?

 

doh... well without the fan mod, my car would go up to 240 degrees F. and none of my fans go on. When my fans are on, even on low, my car never goes above 180 degrees F. unless I am on full boost going up a 30-40 degree incline for about 5-8 mins, going really up there in the rpms (even then I only hit 200 degrees and after I start to come back down/stop hitting the boost so hard, it comes back down to 180 degrees in about 10-20 secs). Note I'm on a stock radiator

(this is not brain surgery, its just grounding 1 or 2 wires/relays)

 

Hey I just got my switch because Im about to do the Fan Mod... but I got just an On/ OFF switch (not the 3 position one) Can I still use it? just on and off?

 

the one i used was a 2 position on/off switch.
-stephen

 

*sweet thanks, so what speed will it be with the switch you have dubcaps?
- give me a discription on how yours runs please

 

i used two switches like the instructions said. One is for low speed, the other is for medium speed, if high speed is ever wanted im 99% sure that the medium speed + the a/c = high speed. Its really straightforward as far as mods go and the hardest part was prolly getting the wires connected to the switches, which really wasnt bad.
-stephen

 

Don't buy anything from Radio Shack. It's all garbage.

 

I got mine here:

http://dkc3.digikey.com/PDF/T023/V5/0761.pdf

part # EG1539ND. The way it wires up, I ground the center of the three conectors on each side (two rows as this is DPDT (double pole double throw)), set the low speed relay to both connectors on one side, and the medium relay to the connector on the other side. Note that I only get medium speed with the ignition set to run.

LOVE IT.

 

what's this about. someone please eleborate? tnx kevin

 

id like to know as well

paul

 

If you replace the stock RX7 thermosensor switch with the lower temp. Miata unit your fans come on at a lower temp. I did it. Works great.

 

can do this also, provided you have FC datalogit software and a laptop

 

https://www.rx7club.com/forum/showth...ighlight=miata

 

...which is where my problem comes in. I searched and posted on this a while back, but no one was able to come up with an answer. When I wired everything up for the medium speed setting, it only triggered the 10-minute rundown sequence after shutting off the car (fans run for 10 min after key is turned off). It would run the medium speed with the key off, but with the ignition set to run, nothing. All the wiring colors match up with the voodoobox instructions, and when I checked the wiring diagrams, it appears that the medium setting wiring setup grounds the temp sensor, which I guess is what triggers the 10 min rundown sequence. So right now I'm just running with the low setting. Anyone out there possibly know what the problemo is? (yes, checked the relays, and they're fine, not toasted or anything)

 

oh ****. i have a pfc. how much is that software. and do you need a laptop or can you do it on a pc also. what else can you do with that thing??? my pfc just plugged in. i have no idea how to tune it yet or tweak it thanks.