C4GP EGS - New clutch and gearbox fitted, but clutch slips

[Mtl]

Hi all,

So my little sister has a C4GP and she had the clutch go on it. I've since had the clutch changed by a mechanic as a surprise for her. But unfortunately the clutch seems to slip when accelerating. I was told the gearbox needed time to relearn. But I'm sure it should not slip.

If I'm on motorway at 50 with cruse on and I press the speed up button. It will slip and revs go to redline and can smell the clutch burning. I'm sure that's not part of the relearn process and it's a brand new flywheel, clutch pressure plate.

I've tried a hard reset, i.e. Floor it from a stand still, no improvement. I've got a copy if lexia coming tomorrow as I'm hoping it's just a calibration issues anyone advise please?

[GiveMeABreak]

If it's the EGS system it needs recalibrating using the diagnostic tool.

This is for the MK I C4 Picasso from 2007 - you didn't state the year on yours. A VIN would be better to confirm system - but if the former this is the sort of operations needed. The numbers in the last column are the order in which the operations should be performed for each particular operation:

Operations to be performed	Replacement: clutch release bearing	Removing - refitting: Clutch	Replacement of the clutch
Reading of the counters	No OK	No OK	No OK
Writing of the counters	No OK	No OK	7 (Reset the clutch cycles counter to zero)
Depressurisation of the piloting actuator	1 (Before replacement)	1 (Before replacement)	1 (Before replacement)
Pressurisation of the piloting actuator	2 (After replacement)	2 (After replacement)	2 (After replacement)
Bleeding of the air in the hydraulic circuit	3	3	3
Initialisation of the bite point	4	4	5
Programming of the piloted manual gearbox grille	No OK	No OK	6
Reinitialisation of the programmed values	No OK	No OK	4
Learning : Value of the engine torque transmitted to the clutch	No OK	No OK	8

[Mtl]

Sorry it's a 2008. Thanks Marc I'll give that process a go when my lead arrives today and I get diagbox installed and working

[Mtl]

Ok so gone though the process above several times and it still slips on geae change or when you accelerate.

Gonna have to get the guy who fitted the New clutch to sort it. Think it's mechanical jssue.

Unless anyone has any ideas? Or is local Hampshire and can have a look.

[GiveMeABreak]

My next suggestion would of been the Dual Mass Flywheel - as this can give the same symptoms as a slipping clutch! Are you positive this was done?

[Mtl]

Yep I'm sure, was billed for it and see the old parts that were removed.

It's an odd slip, gear changes start then it's almost like the car thinks it's shifted and opens the throttle again but the clutch has not fully disengaged on the upshifts.

It also when driving feels like it's always slipping.

[GiveMeABreak]

It just sounds like it's not programmed properly then which it needs to set the biting point and further it may need the gearbox / clutch actuators recalibrated. It's not something I've had to do personally as I wouldn't set foot near one of these semi-autos.

[Mtl]

Any idea how to do the above? Ive gone though the lexia/diagbox process and that does the gate/bitepoint/clutch transmission stuff. but no change. Could it be air in the clutch system? i did run the bleed process but no change.

[GiveMeABreak]

Richard (RichardW) may be the one to help you with this as he's the Picasso Guru and knows about these systems. I've avoided these like the plague for this reason. If he doesn't pick this up at some point, send him a Private message with a link to this thread so he knows what's been done to date.