UPDATE: I just received the 10" fan I got from Amazon and it fits great! Just got to wait for my connectors to come in which look to be a few weeks :\ Will update you guys once I'm all installed. Thanks for all the info!

 

Not debating that the electric fan is the way to go, but sorry to say, you're off base as the rigid fan is not flexible and the only reason mentioned is that the pusher fan was missing and he asked me a question about the mechanical fan used in the installations.

Kinda hard putting a mechanical fan on a transverse engine, and once again at the dirt track, electric fans are virtually non existent and they're not 20-25 years old.

 

I misread your post and looked at the top flex fan in your link.

 

 

I finally got the connector from China and got it all hooked up. Plugs right into the OEM connector for the fan condenser. I went to power on the car, turned on AC, and fan doesn't spin. Bad connection or does that fan only turn on at higher temps? I don't have an ohm thing to test the line unfortunately. Could there be a fuse missing for that since my car never had that fan to begin with?

 

Quite likely the cooling fan 15A fuse and the associated relay are not installed. Also, coolant has to be up to temp, and you have to have the coolant temp switch installed.

 

On my next break, I'm going to go look for the 15A fuse. As for the relay, not sure where I'd look for that - I'll see if I can find it in the manual. I figured bringing it up to temp might be a factor too. I just did a quick cold start and just wanted a few minutes and saw it wasn't spinning, I'll wait longer next time I test once I make sure it has the proper fuses. Coolant Temp Switch? I'll look into that as well. If you can give me some pointers as to where to look, that would be great! but otherwise, I'll try to chase it down in the manual. Thanks for the quick response!

 

temp sender threads into the top of the thermostat cover on S4’s. Single pin connector that grounds out the relay contacts when the car is up to temp.

 

K, Temp sensor is in place, Cooling Fan fuse is in place and in tact. I guess next simple test to do is warm up the car and wait to see if it kicks on while AC is on.

 

Fired up the car, let it read operating temps... nothing, fan didn't spin.

So you mentioned a relay that may not be installed, could you give me some more information on this relay or point me in the right direction?

Worse case, I'll hard wire it to a switch or something to manually fire it up when I run AC (all the time), but I'd like for it to work as it was meant to.

 

I did some digging around and found where the relay should be. On the S4 it's connected to a green 2 pin connector. I found the connector and it's not connected to anything. I'm not familiar how the wiring on this is supposed to go so looking into that some more.

I got some information from this website:
E-Fan Relay Installation How To

Though, this is for a radiator fan, the setup should achieve the same results that I need I assume?

 

I'd appreciate if anybody can let me know if this is all I need (the relay). I really don't know much about this and I value your information. It doesn't make sense to me that all it needs is a relay plugged into that 2 pin green connector. Thanks.

 

I did find out last nigh that the article I was looking at kind of threw me off. I found the actual relay location in the front of the car, near the driver headlight. It's a 6 terminal connector that is not plugged to anything. It makes more sense to me that is what needs the relay and not that green clip. Can anyone confirm this for me?

So if I attach a relay there, the connection is from power to the relay, the relay tests against the thermostat, then to the 2 pin cooling fan connector on the front of the condenser, correct? I can ignore that green clip from earlier?

Thanks

 

What are the wire colours at the 6 pin connector?

 

Looks like a green, a yellow and black, and two black? If that's not clear enough, I can go out there to wipe them down in a bit to get a better look. Not sure if that helps.

 

So I found this on the wire diagram. Looks like I got the proper connector. The one that looks green in my picture is G./R, then there's the Y/B, and the two that look black are actually B/Y and the final Black one. You know... I had no idea what I was looking at when I first saw that wiring diagram picture. I didn't know what those letters meant, but now it makes sense that it's wire color! thanks for pointing me in the right direction! haha.

So I guess I need that relay. Does anyone know a part number? I assume I can use a generic relay? What kind of specs would I be looking for? Thanks

 

Pin layout looks correct for that relay.

You should have a black, a black with yellow stripe, a yellow with black stripe, and a green with red stripe.

If you jumper the black wire to the yellow with black stripe wire, the fan should turn on. An easy test.

You should be seeing battery voltage at the black with yellow stripe wire when the key is in the run position.

 

You can use a standard bosch relay if you want to depin the connector.

 

There may also be a cooling fan control module that would need to be in place; the S4’s were different than the S5’s and it may be required.

 

Thanks so much for your information. So I'll try to jumper the connector to test to see if that triggers the fan to come on. That would give me a huge peace of mind if that works, I'll know I'm on the right track. As for the Cooling Fan Control Module, is that a necessity to get this all working? Because you're right, the S4's have a different control module. In the manual, it says
Turn the ignition switch to ON and check that the cooling fan warning light comes on." I don't even have a cooling fan warning light icon so I'm sure it doesn't exist. Is that just to alert me if it's working or not? or is it an actual factor to get it working properly?

I guess the jumper test will give me the answer to that if it works.

 

JUMPER TEST RESULTS:

Okay so I went out and quickly did the jumper test you suggested. Plugged it all in, turned the key and booya - fan spun!

So this tells me I don't need any other control module, right? just the relay?

Man, you have no idea how happy you've made me with just these results.

 

You can take a look for the cooling fan module at connector f-07 by the blower motor.

Jumping the missing relay will just tell you that the fan is connected to power and ground.

 

I went to go take a quick look at the blower motor to see if I saw any sort of fan control module and didn't see anything that stood out to me. I could also be looking in the wrong area, not 100% sure what it looks like on these cars. I'm trying to google to see if I can find an image of what it looks like on the car.

 

I might just go pick up a relay and try it out. If it doesn't work, how bad would it be to just make like a permanent jumper solution? It would always turn on when the car is on (which is fine with me considering I'm in AZ and always drive with AC on anyway).

 

You could. It would delay how quickly the car warms up is all.
i poked a bit around more at the wiring diagram for the fan control unit, and it doesn’t look like it actually controls the fan. The relay you are missing is controlled by the electrical sub fan relay. That relay is controlled by the temp switch, and the ECU, directly linked to the refrigerant pressure switch.
Near as I can tell, that control unit only activates the warning lights.
if both of those relays are in place, the system should run as per stock.