GT / Diff Temp Sensor / No Oil Temp On Digi Dash ?

[NGOT8R]

I have the option to select diff. temp in my gauges, but the actual temp readings aren’t being displayed. However, I can see and monitor diff. temp via my nGauge which is mounted in the dash AC vent.

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[zack.whitford]

GT350 analog oil temp gauge is the only way to go.

 

[Vlad Soare]

@WD Pro, I trust you will tell us when you find the code for activating the diff temp in the IPC, won't you? I mean, no updates in this thread means you haven't found it yet, right?
I'm keeping an eye on this topic.

 

[WD Pro]

@WD Pro, I trust you will tell us when you find the code for activating the diff temp in the IPC, won't you? I mean, no updates in this thread means you haven't found it yet, right?
I'm keeping an eye on this topic.

My OBD link MX+ has arrived from the states, but it’s wrapped up awaiting delivery by Father Christmas ...

Interestingly it’s waiting with some black McGard wheel nuts, also from the states ...

WD

 

[Lukas]

Axle oil temp is definitely doable in Forscan.

It's in the IPC module (not as-built). I changed "axle oil temp display" from disabled to enabled.

Also interesting to note that I could enable the "performance shift indicator" even though I have the A10.

 

[WD Pro]

Axle oil temp is definitely doable in Forscan.

It's in the IPC module (not as-built). I changed "axle oil temp display" from disabled to enabled.

Also interesting to note that I could enable the "performance shift indicator" even though I have the A10.

This is great news - thank you

As I am a Forscan newbie (or will be on the 25th ... lol), please could you give me details of the code you changed ?

Cheers,

WD

 

[Lukas]

You're welcome .

In the list of Forscan modules, you'll see both IPC (as built) and IPC. The "as built" contains a lot of numbers, but I didn't touch any of those.

I just went into the IPC module which displays a whole list of options (some of them don't work for RHD cars, like oil pressure as mentioned before). Find the right option, change from disabled to enabled, and click write. It's a lot easier with pics or a video, there are a few floating around.

I found that the axle temp gauge didn't move for a long time from a cold start. I thought it was broken but it was showing as above after a 20min drive.

 

[WD Pro]

Thanks again

WD

 

[Elp_jc]

I haven't heard of Mustangs with a differential sensor not having the axle temperature gauge option, but maybe they are. Without such sensor, it wouldn't make any sense to have such gauge, since its temperature couldn't be 'inferred' even remotely accurately, like the engine oil temperature supposedly is (which I don't like, by the way, but better than nothing, I guess).

 

[Elp_jc]

I found that the axle temp gauge didn't move for a long time from a cold start. I thought it was broken but it was showing as above after a 20min drive.

Yeah, that's normal. It takes a while to move (if at all), since the minimum temp is 100F or so. If you don't drive on the freeway/highway in winter, I bet it doesn't move at all. It even takes a while to move in summer.

 

[Lukas]

I haven't heard of Mustangs with a differential sensor not having the axle temperature gauge option, but maybe they are. Without such sensor, it wouldn't make any sense to have such gauge, since its temperature couldn't be 'inferred' even remotely accurately, like the engine oil temperature supposedly is (which I don't like, by the way, but better than nothing, I guess).

It must have something to do with the EU or RHD Mustangs. There's definitely a sensor in the diff, but the temp gauge is disabled from the factory.

Just one of the many minor changes from LHD to RHD Mustangs.

 

[Vlad Soare]

Axle oil temp is definitely doable in Forscan.

It's in the IPC module (not as-built). I changed "axle oil temp display" from disabled to enabled.

That's great info. Thank you. I can't wait to try it.
I'll save my IPC settings before and after the change, then will compare the files to see if I can figure out which code has been changed.

I haven't heard of Mustangs with a differential sensor not having the axle temperature gauge option, but maybe they are. Without such sensor, it wouldn't make any sense to have such gauge, since its temperature couldn't be 'inferred' even remotely accurately, like the engine oil temperature supposedly is (which I don't like, by the way, but better than nothing, I guess).

Euro-spec Mustangs do have the sensor so they can go into limp mode when the diff overheats, but strangely the gauge is deactivated.
I take it it's the same with the Aussies.

 

[Vlad Soare]

But this raises a bunch of other questions. How do we interpret this info?
What's the normal operating temperature of the diff? At what temperature should we start worrying and keep a close eye on it? At what temperature is limp mode triggered?
And if it does start overheating, what can we do about it? Slow down?
How about the other end of the scale - when the diff is below its normal operating temperature? Are we expected to do anything about that, like drive more slowly, or more gently, or something?

 

[Vlad Soare]

OK, I did the change. The strange thing is that I had two similar options in the IPC configuration menu. One was "Axle Oil Temp Display", and the other was "Axle Oil Temperature Display".
I changed only the first one, since that was specifically mentioned by Lukas above. And indeed, now I have the axle oil temperature in the list of gauges.

As promised, I compared the before and after IPC config.
The only change appears to be in block 720-06-01. The before values were FFEE-067B-B854. The after values are FFEE-167B-B864. So, the recipe for configuring it in the as-built menu seems to be this:

720-06-01
xxxx 0xxx xxxx - axle oil temperature disabled
xxxx 1xxx xxxx - axle oil temperature enabled

 

[Vlad Soare]

The gauge shows a red zone starting at 150 °C. I wonder if that's also the temperature at which the car goes into limp mode.

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