Brent Dalton
Sua Sponte
- Thread starter
- #1
I wanted to consolidate this information as it's floating in a few different places currently and I believe this issue will show it's ugly head to more owners in the future.
On the 3rd day of an HPDE back in February at Circuit of the Americas, I heard a ding and I looked down and saw a "rear axle differential temp increased, reduce speed" or something close to that. It was roughly 80 degrees outside. I had just ran a full 30 minute session, took a 30 minute break, and then went back out and was about 15 minutes in when I got the warning. My car was also on 295 Hoosier R7's. I was also on stock ford fluid.
So my first question was:
What temperature does this message trigger at? I was hoping that it came on earlier rather than later. The answer thanks to a forum member and mechanical engineer at Ford : 293 degrees Fahrenheit.
As soon as I the message popped up, I backed off and drove around outside the track to cool everything down. I changed the fluid to amsoil since. I did drive the car 12 hours home, ran an AutoX, and daily driven the car for several weeks now as I've had other stuff to do that has taken me away from finishing up the work on my actual daily driver. There is no noise and everything appears to be in order. Maybe I reduced the life of the diff. Who knows.
So the 2016 mustangs have a diff temp sensor. The 2015 Mustangs DO NOT have the diff sensor. I have been unable to find a way to tap into the computer to be able to monitor the diff temp. Obviously it is not something you can monitor through the dash. I tried an OBD II reader with the torque app and did not have any luck. I'm trying not to void my warranty so I have not hooked up vcm suite from hptuners on it. Has anyone been able to pull up the differential temp via an ngauge or some other source? Does anyone know if it shows up in hptuners?
So I think mitigation:
-better fluid
-a way to monitor the diff temp
-diff cover with increased fluid capacity. Non exist currently, but I think there might be a market for this.
-if the diff cover with increased fluid capacity doesn't work, the next step would be an external diff cooler.
Would love to hear thoughts/feedback/etc... from the other track guys or anyone who has also experienced this.
On the 3rd day of an HPDE back in February at Circuit of the Americas, I heard a ding and I looked down and saw a "rear axle differential temp increased, reduce speed" or something close to that. It was roughly 80 degrees outside. I had just ran a full 30 minute session, took a 30 minute break, and then went back out and was about 15 minutes in when I got the warning. My car was also on 295 Hoosier R7's. I was also on stock ford fluid.
So my first question was:
What temperature does this message trigger at? I was hoping that it came on earlier rather than later. The answer thanks to a forum member and mechanical engineer at Ford : 293 degrees Fahrenheit.
As soon as I the message popped up, I backed off and drove around outside the track to cool everything down. I changed the fluid to amsoil since. I did drive the car 12 hours home, ran an AutoX, and daily driven the car for several weeks now as I've had other stuff to do that has taken me away from finishing up the work on my actual daily driver. There is no noise and everything appears to be in order. Maybe I reduced the life of the diff. Who knows.
So the 2016 mustangs have a diff temp sensor. The 2015 Mustangs DO NOT have the diff sensor. I have been unable to find a way to tap into the computer to be able to monitor the diff temp. Obviously it is not something you can monitor through the dash. I tried an OBD II reader with the torque app and did not have any luck. I'm trying not to void my warranty so I have not hooked up vcm suite from hptuners on it. Has anyone been able to pull up the differential temp via an ngauge or some other source? Does anyone know if it shows up in hptuners?
So I think mitigation:
-better fluid
-a way to monitor the diff temp
-diff cover with increased fluid capacity. Non exist currently, but I think there might be a market for this.
-if the diff cover with increased fluid capacity doesn't work, the next step would be an external diff cooler.
Would love to hear thoughts/feedback/etc... from the other track guys or anyone who has also experienced this.
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