[tcgrmt]

Looking for the stock X3Z electric fan settings:

1. What temp does the fan come on?
2. What temp does the fan shut off?
3. Other speed settings related to electric fan operation?

I don't have a tweecer or other tuner, just trying to use pin 41 of my X3Z computer to run an electric fan with the stock settings.

Thanks,

Rob

[DrDirt]

Here ya go.

EDFHP Fan - Hardware Present 0 Switch
HEDFHP Fan - High Speed Control Present 0 Switch
HSFEC2 Fan - High Speed Enable Absolute Temp 242 DegF
HSFLOD Fan - High Speed Fan High Load Min Load 150.000 Load
VDLHED Fan - High Speed Fan Open Circuit Check Time 2.000 Sec
HSFVS Fan - High Speed Max MPH 40 MPH
HSFRPM Fan - High Speed Min RPM 1808 RPM
HSFEC1 Fan - High Speed Min Temperature 234 DegF
HSFHYS Fan - High Speed Temperature Hysteresis 4 DegF
LSFECT Fan - Low Speed Enable Temperature 220 DegF
VDLEDF Fan - Low Speed Fan Open Circuit Check Time 2.000 Sec
VLFNTM Fan - Low Speed Fan Test Throttle Depress Time 10.000 Sec
EDFTM Fan - Low Speed Min Time Before High Speed 10 Sec
LSFVS Fan - Low Speed MPH 40 MPH
LSFVSH Fan - Low Speed MPH Hysteresis 5 MPH
LSFHYS Fan - Low Speed Temperature Hysteresis 4 DegF
VHFNTM Fan - Time to Suppress TP to Enable Hi Speed Fan 15.000 Sec

[tcgrmt]

Thanks!

Couple of questions:

1. So with the EDFHP & HEDFHP fan switches set at "0" (stock setting) can I run a fan off the 41 pin or do I need these switch settings changed to "1"?
2. With these stock settings looks like the fan will kick on @ 242degF. What's the temp it will turn off (220 or 234 degF)?

Thanks,

Rob

[cgrey8]

What you might want to do is download BinaryEditor and install that so you can see the tune directly AND all the comments that may be associated to each of the values. BE is a free download and since you won't be using it on a real piece of hardware, you won't need to license it to get it to just display the tune. The base install of BE will have the GUFB def file (that the X3Z strategy), and I believe it'll have the X3Z.bin file in the same folder as well.

Looking in the tune, the parameters indicate the low speed turn-on is around 220°F with a hysteresis of 4°, which means the ECT would have to go below 216° to turn off. Then there is the same set of parameters for high speed. In fact, there are 2 Temps for the High Speed fans. Based on the comments, one seems to be lower than the other because one is made for when the engine is at high load, vs the other is under normal condition. But the most interesting thing about the settings I see is that the X3Z indicates the Fan Hardware is not present (EDFHP) and thus Fan control is likely disabled in the tune. So even if you wire something to the EEC, it may not ever activate with that setting not turned on. If you want to experiment with it, the cheapest route would be a Moates chip and burner. BE could modify the tune, then you'd have to use the Moates software to burn the chip OR license BE and BE will burn the chip. It just depends on whether you want to spend your money for convenience or save money and deal with 2 softwares (assuming the Moates software doesn't expose these fan controls)...I have no clue if it does since I don't use the Moates software.

[DrDirt]

A DC Controls fan controler is slicker than snot on a brass door knob. :)

OTOH, tha A9L has the code but isn't used either...but there are instructions all over the place on how to implement it. Since they are the same family maybe the '93 cobra is the same way.

[tcgrmt]

I got the instructions and will test my X3Z to see if it works. Was just wondering what the stock fan setting where?

[cgrey8]

I have to agree, I have Brian Baskin's DC Fan controller on my 2 pushers and it is far more granular in control than the 2-speed strategy.

Not to mention, to get 2 speeds from the fan, you need a fan that is capable of being fed 12v on a low and high speed line. I don't think the EEC is actually doing any kind of fancy pulse control to get a low speed from a high speed winding.

BTW, that's exactly how the DC fan controller does what it does. It is not adjusting the voltage. It's pulsing the voltage out to the fans to control the speed.

[Shaker666]

I have to agree, I have Brian Baskin's DC Fan controller on my 2 pushers and it is far more granular in control than the 2-speed strategy.

Not to mention, to get 2 speeds from the fan, you need a fan that is capable of being fed 12v on a low and high speed line. I don't think the EEC is actually doing any kind of fancy pulse control to get a low speed from a high speed winding.

BTW, that's exactly how the DC fan controller does what it does. It is not adjusting the voltage. It's pulsing the voltage out to the fans to control the speed.

Digging this one up from the grave. I just picked up a Contour dual fan 2 speed assembly, but don't have the wiring harness. In fact, I have no idea which pins are + or - on the fans themselves. In any case, I'm interested in using pin 41 to drive the relay to control the fans, but is it confirmed that the GUFB strategy can't control the 2 speed Contour fans? ie., it can only run them at one speed.