Hey all,
I posted this on the Mustang Source forum and got one reply and 100 or so views but nothing else at the moment. Also, this deals with Advancetrac AND brakes, didn't know where to put it so if it needs to be moved I can take it down and move it to the brake section. I found this forum and since my issue could be track-related, I wanted to post here.
I have a 2012 GT 6-speed with 21k miles - it has a fairly extensive list of mods: Airaid CAI, Bama tune, LTH over-axle pipes, Roush axle-back, Ford Performance sway bars, Koni Yellow adjustables, H&R Super Sport springs, Stoptech slotted cryo rotors and G-loc R8s on the front, and Nitto 555 G2s. I have the Stoptech rotors and R8s for the rear as well, more on that later. I'm not setting the car up for any specific discipline, I'm just trying to make it a rowdy street car that I can take to the strip or the road course once in a while. I had a Track Night in America event scheduled for last Friday and did a mad post-vacation dash to get the new brakes on as they arrived while I was out of town. I got the fronts together just fine (the Brembo calipers are amazing) but ran into trouble on the rear. I bought a tool similar to the cube to rotate the pistons back in but the right rear would just rotate and wouldn't push back into the caliper, even while rotating and pushing. I ran out of time and was forced to put the old pads and rotor back on since I wasn't missing the event. I made it to the track with no issues and was anxious to try out the new setup as this was the first event with the Konis and H&Rs. The car performed flawlessly until the last session, where I had the "Service Advancetrac" error come up. I worked the SCCA event at RA this past weekend and have been busy this week, so I haven't had a chance to tear the car apart and look at it, but I'm assuming I have this issue here, as the symptoms are almost 100% the same:
https://themustangsource.com/forums/...solved-546958/
I pitted when the error came up, parked in the paddock and shut the car off. I let it cool off for a bit while I packed up my stuff and when I started to leave the error was gone. Got to the hotel and researched, found the above thread and decided that was my issue - problem solved, right? Well, Sunday on my ride home from the track, I noticed that the car seems like it's being "held back" somehow - almost like the brakes are dragging very slightly. I stopped off at an exit and there's no smoke, no funny brake smell, no blue-ing of the rotors, just normal heat from an hour or so drive. I'm not sure if this has anything to do with the caliper piston not retracting and causing binding, or if my wire loom is indeed burned and the Advancetrac system is going nuts since there could be exposed wires. I know this is a little speculative because I haven't confirmed any damage to the loom yet, but my problem almost exactly mimics the one described in the Mustang Source post, so I'm 99% confident I have the issue. The only other thing of note, is that since the issue on Friday, after startup, something "clunks" in the driveline when the clutch is released (I'll usually start the car, knock it out of gear and release the clutch and then mess with putting my phone in the holder, music, etc.). It's slight, but definitely there as I can feel it in the pedal and hear it if the door is open. Sorry for the long post, but wanted to get as much info as I can out there and see if anyone else has experienced this. I drove the car around today some and the issue is definitely still there. The car seems fast as ever once you get going, but under acceleration it feels almost like the parking brake is partially engaged. Any help is appreciated!
-Mark
I posted this on the Mustang Source forum and got one reply and 100 or so views but nothing else at the moment. Also, this deals with Advancetrac AND brakes, didn't know where to put it so if it needs to be moved I can take it down and move it to the brake section. I found this forum and since my issue could be track-related, I wanted to post here.
I have a 2012 GT 6-speed with 21k miles - it has a fairly extensive list of mods: Airaid CAI, Bama tune, LTH over-axle pipes, Roush axle-back, Ford Performance sway bars, Koni Yellow adjustables, H&R Super Sport springs, Stoptech slotted cryo rotors and G-loc R8s on the front, and Nitto 555 G2s. I have the Stoptech rotors and R8s for the rear as well, more on that later. I'm not setting the car up for any specific discipline, I'm just trying to make it a rowdy street car that I can take to the strip or the road course once in a while. I had a Track Night in America event scheduled for last Friday and did a mad post-vacation dash to get the new brakes on as they arrived while I was out of town. I got the fronts together just fine (the Brembo calipers are amazing) but ran into trouble on the rear. I bought a tool similar to the cube to rotate the pistons back in but the right rear would just rotate and wouldn't push back into the caliper, even while rotating and pushing. I ran out of time and was forced to put the old pads and rotor back on since I wasn't missing the event. I made it to the track with no issues and was anxious to try out the new setup as this was the first event with the Konis and H&Rs. The car performed flawlessly until the last session, where I had the "Service Advancetrac" error come up. I worked the SCCA event at RA this past weekend and have been busy this week, so I haven't had a chance to tear the car apart and look at it, but I'm assuming I have this issue here, as the symptoms are almost 100% the same:
https://themustangsource.com/forums/...solved-546958/
I pitted when the error came up, parked in the paddock and shut the car off. I let it cool off for a bit while I packed up my stuff and when I started to leave the error was gone. Got to the hotel and researched, found the above thread and decided that was my issue - problem solved, right? Well, Sunday on my ride home from the track, I noticed that the car seems like it's being "held back" somehow - almost like the brakes are dragging very slightly. I stopped off at an exit and there's no smoke, no funny brake smell, no blue-ing of the rotors, just normal heat from an hour or so drive. I'm not sure if this has anything to do with the caliper piston not retracting and causing binding, or if my wire loom is indeed burned and the Advancetrac system is going nuts since there could be exposed wires. I know this is a little speculative because I haven't confirmed any damage to the loom yet, but my problem almost exactly mimics the one described in the Mustang Source post, so I'm 99% confident I have the issue. The only other thing of note, is that since the issue on Friday, after startup, something "clunks" in the driveline when the clutch is released (I'll usually start the car, knock it out of gear and release the clutch and then mess with putting my phone in the holder, music, etc.). It's slight, but definitely there as I can feel it in the pedal and hear it if the door is open. Sorry for the long post, but wanted to get as much info as I can out there and see if anyone else has experienced this. I drove the car around today some and the issue is definitely still there. The car seems fast as ever once you get going, but under acceleration it feels almost like the parking brake is partially engaged. Any help is appreciated!
-Mark