Wilde Racing

iTrader: (26)

O.K First if you have more than two wires coming out of the rad fan, then it most likely will have more than one speed.
Go test the wires with a battery and see which wire controls what.
Now, I didn’t realize you had a second fan for the condenser, but it needs to come on. The compressor will build up to much head pressure and the a/c system as a whole will not work properly.

You can get two speeds out of your set-up by running both fans in series, then in parallel.

zippy

There is a way to get two speeds out of them, but that's not worth it. With an 01' pcm you can control 2 fans for on and off seperatly as well as vehicle speed to turn fan 1 on and off. With EFI Live you can turn the fans on and off with the pcm when the a/c kick's on and off. HP Tuners for some unknown reason hasn't added that feature. I have heard though that if you send them your file they will activate that feature for you.

InchUp

iTrader: (2)

Whenever the A/C is on, so will the A/C condenser 8" fan. Do you also mean that when the 8" fan is on pulling air through the A/C condenser, that the 18" radiator fan must also come on to cool the radiator?

What two fans are you referring to? This is where my electrical abilities stop, because I'm not sure how wiring both the 8" fan and the 18" fan in series then in parallel will just give my 18" fan dual speeds. I'm only wanting the 18" fan to run dual speeds, the 8" fan is simply on or off just like the Dodge Ram has it stock.

Wilde Racing

iTrader: (26)

You will need to use the smaller A/C fan as a resistor in series to get the slower speed.


If you want two speeds you could set it up like this.
If the engine temp hits the set temp. the rad AND the a/c fan turn on low.
If the only the a/c is on (engine cold) a/c fan on high.
If both the engine is hot and the a/c on, both fans come one high.

Or if your fan has two sets of widings....
If the engine temp hits the set temp. the rad fan energizes the "low" speed
If (you can get the pcm to control a second pin) use it to run the fans on high.
A/C fan runs off it's own circuit controled by the a/c clutch...

Wilde Racing

iTrader: (26)

chech your fan. if it has the second set of windings, it will be a lot easier..

InchUp

iTrader: (2)

Thanks for sticking with me on this one, the picture is clearing up. I will do that when I return home for the weekend (away at school mon-fri).

What am I looking for?

Wilde Racing

iTrader: (26)

do you have a DVOM? digital volt/ohm meter?

nonnieselman

iTrader: (10)

Change this from Auto Recirculate to Fan#2 output


Series Parallel



But that is EFI Live...






Have you figured out how you want to wire it yet??
IF not i can draw you a wiring diagram.

InchUp

iTrader: (2)

I can get one, it's a craftsman $40-50 dollar ohm meter.

InchUp

iTrader: (2)

Still working out the bugs trying to figure out how to wire my fan for 2 speeds, but it looks like I need one bit of info first...1 vs. 2 windings.

As far as I know, this is all I can do with HPTuners. Just took this screen shot 2 minutes ago.