Finally after almost 6 weeks I have her back (612). There were several things that needed attention thus the delays as it took them time to get parts from Ricambi and then from Ferrari (Italy)
The techs were never able to reproduce the shifting to 4th issue, as mentioned it has been random. I'm not sure if they checked the items all of you have mentioned. I'm going to keep an eye out for it, if it does happen again i'm bonn just take her up to a Ferrari tech in Toronto.
Here is the report they gave me of the codes
** ROAD TEST VEHICLE COULD NOT VERIFY COMPLAINT. ENTER ON BOARD DIAGNOSTICS FOUND DTC P1747-REVERSE SWITCH ABSENT FOR GEARBOX CFC231. VERIFIED THE REVERSE LEVER IS BROKEN AND POSITION DOES NOT MATCH WHAT VEHICLE CONTROL UNIT IS SEEING. SHOULD BE REPLACED FIRST BEFORE ANY OTHER DIAGNOSIS/REPAIRS.
** VERIFIED CONCERN, FOUND DTC'S P1602-PERMANENT POWER SUPPLY ABSENT AND P0072-AIR TEMP SENSOR GROUND ABSENT, BOTH IN RIGHT HAND ECU. FOUND DTC'S P1033-REAR LAMBDA SENSOR CYLINER 10-11-12 NO ACTIVITY/ABSENT; P1262-CYLINDER 10-11-12 REAR LAMBDA SENSOR HEATING CHECK ABSENT; P1611-PERMANENT POWER SUPPLY; P1050-RIGHT HAND BANK LAMBDA SENSOR CIRCUIT SLOW RESPONSE PRESENT; and P1114-LEFT HAND BANK OUTSIDE TEMP SENSOR SHORT TO GROUND ABSENT. CLEARED ALL DTC'S AND MONITORED A/F RATIO SENSORS WITH OSCILLISAGE-EVERYTHING OK AT THIS TIME. CAN TELL THIS ENGINE HAS BEEN APART MULTIPLE TIMES AND COULD HAVE BEEN A CAUSE TO THE DTC, RECOMMEND MONITOR AND REPORT WITH ANY ISSUES.
The following is what they replaced/worked on
Replaced the Reverse lever, they modified one of the others out there since the one for the 612 was pretty pricey.
Flushed F1 fluid, replaced,
Differential and transaxle fluid fluid flush/replace
Replaced the Kaiser valve and tube
Replaced all the o2 lambda sensors
And also replaced the F1 relay
So far haven't had the issue with going to neutral when shifting up into 4th or downshifting into 4th.
The CEL came on today, less than 24 hours ager i brought her home, I was riding on fumes this morning literally. After filling her up the CEL went away, I'm hoping it's just some gunk that cleared up. Any suggestions on using fuel cleaner to clear out any gunk?