Sam McGoo
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- 1,807
As above, I have a 2013 (MY14) GT Sport MC-shift. I've had it just over 2 years now and its my second GT MC shift, I love them.
Background - Bought at 19k miles with 48% clutch wear.
During my first winter of ownership, maybe half a dozen times, it dropped into N when down changing from 3 to 2. It only ever did it when it was sub zero temperatures, and within the first couple of miles of the journey. Once up to temp, it never did it, so wasn't really an issue.
During warmer temps in the summer, again never did it.
Second winter (last winter) - Happened much more frequently (maybe once or twice every journey), but again mainly when cold.
Now it does it a few times every journey when dropping from 3 to 2, drops into N.
Also, it will now occasionally (but still most journeys) drop into N when changing 4th to 5th, but only when on very slight/part throttle. If it under load, and accelerating hard, its doesn't do it ever.
Temperature no longer seems to make a difference.
Car is now on 30k miles (so thought it might be new clutch time) and just had major service.
Current clutch readings are;
New clutch position = 19.92mm
Self calibrated closed clutch position = 21.93mm
PIS 3.93mm
Am I right in thinking the the clutch isn't at end of life, as that would usually be nearer 24.5 mm ?
Other info from service.
Hyd circuit pressure 44Bar,
Stored codes - P1770 - Gear engagements with wrong shifts-invalid signal
P 1771 - Gearbox input high RPM-invalid signal
The Tech carried out a gearbox re-lean, but this doesn't seem to have made a difference.
I did find this very helpful thread when searching, but it refers to coupe/spider/GS - Is the F1 in those similar enough for the info to be useful to me? F1 Clutch Replacement
The only fluid that wasn't replaced (and probably never has been) is the F1 hydraulic fluid, as I believe that is not on the service schedule.
So, judging from the above thread, I assume that replacing and bleeding the F1 Hydraulic fluid would be a logical next step?
Any other suggestions of likely culprits from those in the know?
Thanks in advance.
Background - Bought at 19k miles with 48% clutch wear.
During my first winter of ownership, maybe half a dozen times, it dropped into N when down changing from 3 to 2. It only ever did it when it was sub zero temperatures, and within the first couple of miles of the journey. Once up to temp, it never did it, so wasn't really an issue.
During warmer temps in the summer, again never did it.
Second winter (last winter) - Happened much more frequently (maybe once or twice every journey), but again mainly when cold.
Now it does it a few times every journey when dropping from 3 to 2, drops into N.
Also, it will now occasionally (but still most journeys) drop into N when changing 4th to 5th, but only when on very slight/part throttle. If it under load, and accelerating hard, its doesn't do it ever.
Temperature no longer seems to make a difference.
Car is now on 30k miles (so thought it might be new clutch time) and just had major service.
Current clutch readings are;
New clutch position = 19.92mm
Self calibrated closed clutch position = 21.93mm
PIS 3.93mm
Am I right in thinking the the clutch isn't at end of life, as that would usually be nearer 24.5 mm ?
Other info from service.
Hyd circuit pressure 44Bar,
Stored codes - P1770 - Gear engagements with wrong shifts-invalid signal
P 1771 - Gearbox input high RPM-invalid signal
The Tech carried out a gearbox re-lean, but this doesn't seem to have made a difference.
I did find this very helpful thread when searching, but it refers to coupe/spider/GS - Is the F1 in those similar enough for the info to be useful to me? F1 Clutch Replacement
The only fluid that wasn't replaced (and probably never has been) is the F1 hydraulic fluid, as I believe that is not on the service schedule.
So, judging from the above thread, I assume that replacing and bleeding the F1 Hydraulic fluid would be a logical next step?
Any other suggestions of likely culprits from those in the know?
Thanks in advance.