Has anyone experienced an issue with the Ediff were at idle and in neutral the ediff is locking up? When looking at the live data, the System pressure is at 42Bar and the locking pressure is at 24bar at idle in neutral. It is also reading 0Amps. When you put the car in 1st or reserve, and attempt to drive off the entire F1 system pressure drops and does not recover until key off and waiting 30s. The differential remains locked and you can tell the diff clutches are not releasing. I depressurized the system and disconnected both lines from the ediff and the car drives perfectly minus an oblivious ediff warning. Any input would be greatly appreciated!
Based on the items you are describing..it sounds like your ediff solenoid is stuck open .. the pump should be cycling every 45 seconds if the case What tool are you using to read data I would suggest a do a ediff bleed function if tool has it ..this will activate the ediff solenoid..see if it is acting the same Let us know tool and if pump cycles every 45 50 seconds It isn't uncommon for the ediff solenoid to go How many miles ? Sent from my moto g power using Tapatalk
I’m using a TEXA is read the values. The vehicle has a new ediff solenoid and pressure sensor. Currently has about 21k miles on it. Between pin 1&2 at the ediff solenoid I’m getting 7.6v and same on pins 15&18. The module is getting 12v in
Sending you a PM with my number so we can get to bottom of this - I am looking for locking pressure values
Given Kyle is working thru/sorting other items on the car I figured I would give the community a quick update on the issue brought up on this thread before I can't remember the details anymore. He can fill in when he gets a chance / at his leisure. I am a strong believer that a thread is useless unless the final resolution was documented. How many times have we read 300 posts on a problem thread to find the final resolution was not posted - very frustrating. Anyway back to the issue - After gathering some data points, trying a few things while on the phone, and coupling that with some thinking offline of how the e-diff solenoid works ... the path led to the final resolution /issue......... the hoses to e-diff were reversed at quick connects Just a note - the car came to Kyle like that and has had this issue for a while - Kyle can fill in here if he likes to What were the data points that lead me to suggest to check the hoses ? Pressure in e-diff was approx the same as hydraulic system pressure even at just key "on" / engine off state - big telltale sign - normally, even with a stuck e-diff solenoid, the pressure is around 15 bar - these numbers were over 40 bar and again followed the system pressure E-Diff solenoid was not activated by e-diff ecu ( pulled plug on it to double check.. no change) - rule out bad ecu Pressure sensor was new and recorded pressure correctly - use diag tool to monitor pressure and Kyle did back probe to check volts on signal wire The pump would not cycle every 30 seconds to 1 min like a stuck open e-diff solenoid - stayed off the normal time for a key on /engine off status - this was a big telltale sign Once e-diff was activated ( driven) the pressure in the system would deplete very quickly and caused pump to run constantly which in turn caused TCU safe guard to kick in These were the major "different" signs i have never seen before - so it wasn't the typical e-diff solenoid failure ( i have come across / help fixed many in the last 2 years) Just a another note ... All the stored codes pointed to a e-diff solenoid and/or sensor issue or failure - which unfortunately leads you down the wrong path I guess things to take away .. Never trust a part was installed correctly by a previous person, or that the components were all put back together properly. Try to study history of work that was done right before issue and say what areas were touched and how that can cause the issue now. Try to study the part/ system at hand and "say" what if this happens etc - even if "it can't possibly be .. e.g. "but it is a new part"
None ......same size etc ..I can see how easy it is to mess i am not saying I would make that mistake seeing so many of these and knowing which is feed and return ..but even with at I didn't trust my memory and check the parts manual Sent from my moto g power using Tapatalk
Flash, Can we connect? I have a 2009 F430 that was converted. I have no lights, no warnings, and I've had Ferrari through the entire car. We removed the differential and inspected everything, we have done 5 gear oil flushes and we are now running Redline. At slower speeds it seems like the e-diff is locking up and I can feel it in the rear end (switches sides depending on which was I'm turning, and sometimes when braking). The F1 system has been flushed, I read system and locking pressures, solenoid has been replaced. The symptom does not happen every time/ turn, it can be warm or cold. The car is otherwise in great shape, operating perfectly. This is the one thing no one has been able to get to the bottom of. I read your summary on the fix for the problem in this thread and it seems like you have some really good insight on the e-diff. Additionally, I while I can see pressures on my launch tool, I have never once heard the F1 pump turn on - other than when I did a forced flush - so the pump does work. It has never come on when you open the door like F1 cars, and I never hear it while driving - but I do show system and locking pressures. The car has been tuned by Trev360 for the conversion - just ignoring the TCU that no longer exists - and the new wiring for the e-diff was installed by the company that did the conversion just before I purchased the car. You mentioned e-diff ecu possibly being bad, hydraulic lines being crossed, and maybe the wiring was not done properly...I just don't know enough about it. Any help would be great!
