Hello StefVan, in the meantime i did change the eDiff Valve on my 430 also as you suggested some posts earlier in this thread where i posted the pressure charts. Before the change i checked the pressure decrease rate while the car is standing still, engine off and cold. With Ignition on it took something about 8 minutes from one pump start to the next pump start (so from about 51 bar to <40 bar). After the eDiff Valve change i saw exactly the same rate so my fear was that i have damaged the new valve.
So i disconnected the two hoses to the eDiff to see how the system behaves while eDiff is ruled out. What i can see is that the pressure is still going down within 8 minutes (without any gear shifting). Pressure accumulator is new, was changed end of last season but did not change anything, hydraulic oil was also changed to the LM last year.
Still need to check with a external powersupply how the pressure rate behaves once i manually power the valve with different currents (0.1 to 1.7A as you suggested) to see if this is behaving normal (maybe the old eDiff valve was simply bad in some pressure ranges as i lost too much pressure during driving as show in the charts from last year - see some posts before in this thread).
So the question is, is the pressure decrease rate from fully charged to <40 bar with 8 minutes without any gear shift in stand still in the normal range or is there something else wrong in my system ? If something is wrong, any idea what the issue can be and how to find it ? Would like to avoid to change the complete F1 Powerblock. I think gear actuator, clutch and the distribution block (because of hair cracks) can be ruled out since in stand still there is no actuation so the pressure is lost somewhere in the area of pump and F1 Powerblock.
What i also found is that with the Texa tool i can do all the things regarding the eDiff which is in the selection menue BUT the function to decrease the system pressure to 0 bar seems not to work most of the time. Is there any precodition to get this working ?
Tried already many things like driver door open/closed , brake pedal pressed, not pressed, handbrake activated / not activated, pump motor connected / not connected (have the Smart eMT Relais so the eDiff ECU will not recognize that it was disconnected). I think from 100 tries on several days it may work only one time an i do not know why. What i do is to select the function system pressure release,press the start button, press the activate button, press the cursor up button (display then says that the pressure decreas in "On"), wait for some seconds, switch it "Off" with the cursor down, press the Accept or the Cancel button (tried both) and go the pressure reading. Nothing changed beside the normal pressure decrease. Time between On and Off i did vary from about 5-20 seconds, nothing changes.
All is done of course with the eDiff hoses connected since i assume that the pressure relase is done by activating and deactivating the eDiff valve.
Any idea on this (since you are also using the Texa) ?
Best regards,
Bruno
So i disconnected the two hoses to the eDiff to see how the system behaves while eDiff is ruled out. What i can see is that the pressure is still going down within 8 minutes (without any gear shifting). Pressure accumulator is new, was changed end of last season but did not change anything, hydraulic oil was also changed to the LM last year.
Still need to check with a external powersupply how the pressure rate behaves once i manually power the valve with different currents (0.1 to 1.7A as you suggested) to see if this is behaving normal (maybe the old eDiff valve was simply bad in some pressure ranges as i lost too much pressure during driving as show in the charts from last year - see some posts before in this thread).
So the question is, is the pressure decrease rate from fully charged to <40 bar with 8 minutes without any gear shift in stand still in the normal range or is there something else wrong in my system ? If something is wrong, any idea what the issue can be and how to find it ? Would like to avoid to change the complete F1 Powerblock. I think gear actuator, clutch and the distribution block (because of hair cracks) can be ruled out since in stand still there is no actuation so the pressure is lost somewhere in the area of pump and F1 Powerblock.
What i also found is that with the Texa tool i can do all the things regarding the eDiff which is in the selection menue BUT the function to decrease the system pressure to 0 bar seems not to work most of the time. Is there any precodition to get this working ?
Tried already many things like driver door open/closed , brake pedal pressed, not pressed, handbrake activated / not activated, pump motor connected / not connected (have the Smart eMT Relais so the eDiff ECU will not recognize that it was disconnected). I think from 100 tries on several days it may work only one time an i do not know why. What i do is to select the function system pressure release,press the start button, press the activate button, press the cursor up button (display then says that the pressure decreas in "On"), wait for some seconds, switch it "Off" with the cursor down, press the Accept or the Cancel button (tried both) and go the pressure reading. Nothing changed beside the normal pressure decrease. Time between On and Off i did vary from about 5-20 seconds, nothing changes.
All is done of course with the eDiff hoses connected since i assume that the pressure relase is done by activating and deactivating the eDiff valve.
Any idea on this (since you are also using the Texa) ?
Best regards,
Bruno