F1 transmission light comes on periodically

I am not sure if this is the issue cited by rustybits " driven on marginal f1 system" , but my hunch/guess is that if you don't have any visible leak anywhere on the f1 system, the power unit is probably on its way gone. I.E. some valves leaking or starting to fail. Just a guess, based on my own car.I could be wrong, but I should be very close

My modena had the same problem, until i replace the tcu with a CS unit and the problem was gone. I was thinking it is that the CS tcu's algorithm is so good that it require less of the 'marginal f1 system's hard-working. Thus.....

Fact: my power unit's clutch solenoid valve has a 150 cc/min leak when it is not triggered ( the benchmark should be somewhere around less than 60 cc/min )

Despite this fact, my car, before the cs TCU , still drives ok, with occasssional f1 lights on, just like yours.

your 430 could be the same, go hook up with an sd3/leonardo to see the leakage value on the valves.

 

Natman316, what year and month production is your F430?

 

Very early production 2005 F430s had smaller pumps that were undersized for the application. Ferrari increased the size during 2005.

 

Yup, powering the F1 system and the E-Diff was just too much for the 360/575M pump in early F430s. Especially since few bothered to change fluid and bleed.

 

I am no expert but I don't buy it.
summoning experts here. i am still 99% sure its a pressure issue.

 

Your E diff solenoid might be starting to go. Also could be the connection to your rear hood not securing all the way?

Those are two possible scenarios

 

again, i am no expert, just my personal informed guesses:

From my 3 years peresonal dealing with my 2+ modena , CS , basically the clutch actuation and gear selection actuation are actuated by a close hydraulic cuicuit. For your f430, which im not familiar with, the e-diff was added, which forms, I guess, a complete hydraulic circiut together with the aforementioned hydaulic circuit. Any leaking point(including the actuator) or any malfunctioning valves in that circuit could cause a low pressure in the system, ergo the f1 light.

From my understanding of my 360/cs, the clutch position sensor ( you named it gearbox position sensor??) is a black and white thing. I.E. if it works, it works perfectly, it dosn't work, car won't start! If it was my car i would guess the dealer was with the "throwing parts until fix" approach. Again , its a guess, they might be all correct and I be uber wrong.

 

did you get a reading about the clutch valves and stuff from SD3 or SDx?
I'd like to see it (shoot, i sound like an expert)

 

should you ask for the dealer for the SD info? um..... depends on the situation i think?
you don't want to rub them the wrong way? you are on your own for that

is the clutch positoin sensor the only sensor in the f1 system? No. there's pressure sensor, there's another 2 sensors on the actuator, iirc.

 

i am pretty sure the "gearbox position sensor" is the "clutch position sensor"
i am not quite sure if this sensor works like perfect or complete failing as I just said. This working or non-working is based on just 1 experience I had. so experts please chime in.

 

call ricambi for this part:
Search results for: '243784' - Ricambi America, Inc.

I know my buddy has a new spare in hong kong as well if you need it fast.

I did this on my 360 without transmission off, but for a 430 I don't know.
since the gearbox are almost identical, i guess it is a pretty simple job for an indie.
takes about 1 hour maybe? I did it within 1 hour but I am very familar with the 360 so everything was pretty fast.

 

there should be 2 of them, which one? or both?
for that price it should be just 1