F1 gearbox issues

[mjheathcote]

First run out today for annual MOT.
All good clear pass.
Back at home, left outside garage to cool down...if I park straight away the front cats are too much for my PVC garage floor tiles!
6 Hours later jump in to be welcomed with the red F1 gearbox light, and a flashing N logo.
Plug in EasyMas and get the following codes:

Stored DTC (S) 01. [ Active ¤ ] P1741 - GEAR ENGAGEMENT POTENTIOMETER ¤ 02. P1742 - GEAR SELECTION POTENTIOMETER

Looking at gearbox actuator information, the Selection Position is 198, with a min of 459 and max of 666, so out spec.

Will not select 1st, but tried Reverse, and it went in! then it would select 1st, and all warning lights now out.
Ran diagnostic again and all fault codes are cleared.
Checked the gearbox actuator information again and now 354, higher, but still out of specification.

Although i'm not getting any clutch slip, the clutch wear is presently at 110%...

Any comments welcome!
Thanks.

 

[cheshiremaserati]

No idea what all that stuff on codes mean. If it happens (or anything for that matter), I just book it in to Marios at Autoshield, knowing he will sort it.

The same with the Porsche Turbo - goes straight to the indy to sort out. I read and hear if so many folk on the Porsche forum who 'have a go' and 'dabble' and end up with a much bigger bill due to not knowing what they are doing and experimenting with first this, then that etc.

I hope you sort it.

 

[conaero]

Check the clutch values, PIS should be 4.65 and do a relearn via EasyMaz

If no joy. It’s clutch time

 

[mjheathcote]

Check the clutch values, PIS should be 4.65 and do a relearn via EasyMaz

If no joy. It’s clutch time

The PIS is 5.08 and I do feel it is too wide, underfoot, if you know what I mean.
To adjust it down will have to upgrade to write functionality of EasyMAS.
Thanks.

 

[Motorsport3]

How many miles on that clutch?

 

[conaero]

The PIS is 5.08 and I do feel it is too wide, underfoot, if you know what I mean.
To adjust it down will have to upgrade to write functionality of EasyMAS.
Thanks.

My proven best settings:
4200 - 4.65, clutch life 25-35k miles
GT - 4.19, clutch life 40-45k miles
Plus a relearn and see how you go

 

[mjheathcote]

How many miles on that clutch?

Original clutch 18,500 miles

 

[safrane]

Miles on a F1 clutch are not really an indication of wear, it's the number if gear changes that impact on its usability.

 

[Motorsport3]

Miles on a F1 clutch are not really an indication of wear, it's the number if gear changes that impact on its usability.

Agree, though I don't know anyone counting those

 

[Black Mazerati]

Miles on a F1 clutch are not really an indication of wear, it's the number if gear changes that impact on its usability.

It's not the gear changes as they shouldn't cause much if any wear at all. It's the number of starts and stops, how many steep hills you start off on and especially if you have to reverse uphill much.

 

[mjheathcote]

It's not the gear changes as they shouldn't cause much if any wear at all. It's the number of starts and stops, how many steep hills you start off on and especially if you have to reverse uphill much.

Especially the reverse up hill 'clutch killer'.
There is nothing worse than having to stop on a narrow country road, facing downhill, and the vehicle facing uphill refuses to move down to allow you to pass

 

[hladun]

This might help (I'm Tony H on that forum)

how does the wear on this clutch look ?

Hi Everyone, So I had my F430 up on the ramps with all the undergarments off (I was doing a full exhaust swap out for the Fabspeed package, minus...

www.ferrarichat.com

 

[CatmanV2]

Especially the reverse up hill 'clutch killer'.

But that (as all of them are) is down to the programming. How much the clutch slips is a function of what the designers were trying to achieve in terms of the experience. I would *assume* that if you had the same parameters on a reverse engagement as a forward one, it would be 'interesting'

C

 

[conaero]

GT 4.7 clutches you can pretty much expect 40-45k out of them with the exception of a used examples

If yours is a genuine sub 20k clutch and the flywheel and bearing was also done I’d be pretty confident saying it’s not the clutch

 

[mjheathcote]

GT 4.7 clutches you can pretty much expect 40-45k out of them with the exception of a used examples

If yours is a genuine sub 20k clutch and the flywheel and bearing was also done I’d be pretty confident saying it’s not the clutch

Cars done 18.5k from new, the clutch flywheel and bearing are all original never been changed.

 

[RoaryRati]

Especially the reverse up hill 'clutch killer'.
There is nothing worse than having to stop on a narrow country road, facing downhill, and the vehicle facing uphill refuses to move down to allow you to pass

I just let them know it will take me at least 1/2 hour to reverse as the car doesn't reverse up hill