Join Date: Dec 2012
Maserati Life Posts: 2,283
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1.) Your KISS point/ PIS shouldn't randomly shut the car down. Additionally, 5.1mm is almost the max for these F1 cars you'd want to have it at. I've set them as low as 3.6-7, every car is different. No offense that's incorrect information. The car isn't going to start shutting down based off of the PIS set. What it could do is if you switch to neutral when the friction discs are heat soak, it won't go back into gear. If it's set too low it could also present in having really jerking clutch engagement after it's heat soaked. Basically sitting in traffic for a while on/off the clutch heats the friction discs, and you get thermal expansion. What it won't do based off of PIS alone is kill the car.
2.) Though I'm not totally disagreeing the F1 position sensor could randomly kill the car. I find it odd there's no gear box codes stored for it, or it's hard to replicate. What I mean is normally if it's an issue like this it won't start right back up. When you go to start it the F1 light will come on, or when it dies has the CC light/audible beep, and you'd need a slight cool down period. It definitely is a hall effect sensor like Dave described. But the fact the OP hasn't mentioned once the F1 light, or CC light being illuminated, and coupled with the fact according to the Ferrari Tech pulled no codes from the NCR I have my doubts.
Obviously that's all they are is doubts or observation from behind a computer because we don't have the car here. That being stated how are we assuming it is just a gearbox related issue? Another hall effect sensor that can cause random engine shut offs with no warning is the crank position sensor. The brake pedal switch can also kill the car. A faulty NCR. Wiring issues as has been mentioned, maybe a ground. I've seen rodent damage in the winter time. What I can say, or caution is, I've yet known a mechanic/technician that can diagnose from on-line. I'm not sure where the OP lives but unfortunately whoever works on it will need to replicate the issue as the OP has experienced it.
Last edited by Craig; 02-15-2017 at 11:01 PM.