| C4 - DS4 Owners :: Forums :: C4 Picasso and Grand Picasso - PRE 2013 only :: C4 Picasso and Grand Picasso General questions |
<< Previous thread | Next thread >>
|
Buying C4 Picasso with intermittent gearbox fault |
    Please Register to enjoy additional Member Benefits |
|
Top Thanked Forum Posts: Today | Week | Month | Year | All time | Most Thanks Given: To member | By user
|
| Author | Post | ||
GPGeorge
 
|
|
||
   Member No: #44097
Joined: Mar 13 2016Location: London |
Glad to hear its worked, you've got my number, drop me a text or a whatsapp if you need anything, was nice meeting you. | ||
|
|
|
||
|
vincentfishing
|
|
||
 Member No: #57297
Joined: Nov 26 2020Location: Westgate kent uk |
well the clutch judder came back in 1st gear, have reset clutch bite point a few times with diagbox which cures it temporarily, but it always returns, have tried pulling away in 2nd in manual which works suprisingly ,no judder ! then just go into auto once moving,,, seems to be something to do with 1st gear as opposed to clutch bite point?? I have only reset clutch bite point outside house as engine needs to be cold, the nearest place i can do the gearbox recalibration/ learning is about 13 mins away, diagbox says leave car in neutral for 20 mins and warm up engine before commencing, can i drive the 12 mins as the wam up before selecting and starting the on the road recallibration ?? hoping by completing the full clutch/gearbox recalibration it might help judder.(have my doubts though!) |
||
|
|
|
||
|
GPGeorge
|
|
||
|
Member No: #44097
Joined: Mar 13 2016Location: London |
yes you can warm it up driving, probably better in my opinion as everything will be up to operating temperature, ie gearbox, clutch, and not just the engine. | ||
|
|
|
||
|
vincentfishing
|
|
||
|
Member No: #57297
Joined: Nov 26 2020Location: Westgate kent uk |
did the gbox recalibration/clutch reset last night, drove ok last night and short run this morning but just went round corner and 1st gear judder back again, strange how it fixes then resumes again, going to try repeating it all one last time, if no joy going to 1st try clutch bleed for the hell of it on diagbox(presume no fluid loss or any other problem likely to occur) ,if no difference then syphon out hydraulic fluid from egs and replace, maybe hydraulic fluid deteriorated over lifetime of car. fluid ive seen is Ravenol GHA-F RAVENOL GHA-F Transmission Fluid was designed for use in electrically controlled MCP automatic transmissions from Peugeot/ Citroen and in Dualogic and Selespeed automatic transmission from Fiat/ Alfa Romeo. It is suitable for use in temperatures ranging from -40°C to +100°C. Meets/ Exceeds Requirements Peugeot/ Citroen 9979 A4 MCP Automated Gearbox Actuator Fluid Any thoughts ,ideas, gratefully recieved |
||
|
|
|
||
|
GPGeorge
|
|
||
|
Member No: #44097
Joined: Mar 13 2016Location: London |
Hi Vincent, 10 out of 10 for not giving up  , any of the fluids you've listed will be fine and a clutch bleed wont cause you any more problems or loose you any fluid. I don't think syphoning the oil out will gain you anything as you will still have the original oil in the system, it wont mix in either as it only pushes back and fore and doesn't circulate. Hydraulic oil is very resilient stuff unlike clutch and brake fluid (which is hydroscopic and will absorb moisture from the air) and doesn't usually deteriorate. To get the oil out of the system you will need to disconnect the actuator (thrust bearing) pipe and bleed it dry. I can't remember how many miles you said the car had done but my clutch judder was the beginning of the end of my DMF. It started at about 68000 miles and by 75000 it was doomed. If you let the DMF get too bad it will wipe out the input shaft bearing in the gearbox. The fluid isn't cheap either, I used the original Citroen stuff and that was 30 quid a litre. Clutch judder is almost always a mechanical problem like the DMF, a broken spring in the clutch plate or oil contamination of the clutch plate.Good luck and keep at it. |
||
|
|
|
||
|
vincentfishing
|
|
||
|
Member No: #57297
Joined: Nov 26 2020Location: Westgate kent uk |
i cant see why it would pull away in second with no judder , surely if its mechanical it would still judder ?????? i was thinking could it be pressure problem on piston or piston sticking, need to have a good look at egs schematic or likewise to see how it operates, there are so many threads all over the internet about 1st gear judder at any mileage on this gearbox that theres surely got to be more to it??(citroen wouldn't have stopped making it unless there was an inherent problem, they didnt stop making dmf/clutch, has to be egs problem) looking at buying a non runner C4 gp same year and engine and egs , might take apart egs on it, or swap for mine,,, |
||
|
|
|
||
|
GPGeorge
|
|
||
|
Member No: #44097
Joined: Mar 13 2016Location: London |
Looks like its only you and I on here that share an obsession with fixing egs gear boxes , haven't seen any other input . And the egs will release the clutch slower in second gear to compensate for the higher gearing.
|
||
|
|
|
||
|
vincentfishing
|
|
||
|
Member No: #57297
Joined: Nov 26 2020Location: Westgate kent uk |
Its only £15.50 del'd for 1 litre of the ravenol, so unless draining the fluid is likely to cause a problem, its definetly going to be done ,just to see if any difference, presume just disconnect pipe and suck it out with vacuum pump? then do clutch bleed on diagbox, also found some schematics for egs and saw pressure sphere, are these same as ones on old citroens that always lost pressure?!!?? presume they are replaceable?? |
||
|
|
|
||
|
vincentfishing
|
|
||
|
Member No: #57297
Joined: Nov 26 2020Location: Westgate kent uk |
just tried to bleed clutch, computer said " ACTION TERMINATED" so not letting me do it?? tried depressuring system YEP "ACTION TERMINATED" TRIED REPRESSURISING "ACTION TERMINATED" guessing i am doing something wrong??? just redone clutch bite adjustment, stopped and started in 1st gear about 8 times with no judder, but almost certain on next drive will come back. have found a couple of references now to changing hydraulic fluid. heres one from valeo who have responded to complaints of new clutches not working properly, "After further investigation, Valeo technicians have identified the cause to be(often when the fault code P1755 or P1712 is present) a contaminant build up in the gear shift hydraulic unit." Am worried that if i cant depressurise/repressurise system i can't disconnect pipe and drain hydraulic fluid ???? |
||
|
|
|
||
|
GPGeorge
|
|
||
|
Member No: #44097
Joined: Mar 13 2016Location: London |
Not come across that before, when I did mine it dumped all the oil on its own via the thrust bearing so it had already de pressurised itself. Try doing it as a new clutch fit under pack repair and it will go though bleeding the clutch to programming the gearbox one after the other in order. Did you mange to update diagbox in the end? | ||
|
|
|
||
|
vincentfishing
|
|
||
|
Member No: #57297
Joined: Nov 26 2020Location: Westgate kent uk |
No didnt risk it after diqagbox worked doing everything, might let brother (computer geek)do it next time hes down if anyones messing with diagbox on a picasso thats got a good working Egr could do with some comparison readings to rule out pressure /clutch bite point problems I have in cfc300p status of clutch, hydraulic pressure 45 bar(declutched) then 39 bar (think thats when i put lever from neutral to auto) i then have clutch actuator position ref value 24.33mm clutch actuator position 23.45mm position of clutch biting point 5.82mm open position of clutch actuator 15.11mm also in c300p IDENTIFICATION I have software version 04 02 , Have found that by very gently pressing accelerator till cluth engages can then drive off without judder, but annoys people behind ! and cant pull out fast when needed without judder. |
||
|
|
|
||
|
vincentfishing
|
|
||
|
Member No: #57297
Joined: Nov 26 2020Location: Westgate kent uk |
Well 8 months on from buying it cheap with dogdy egs its finally conked out, first of all no gears , then after messing with auto and manual got 2nd gear and managed to get going ,as soon as i stopped at 1st roundabout, no gears, 10 embarrassing minutes of rounabout blocking got it into 1st and managed to get home without stopping, put it on diagbox and got P0946, electropump assembly electric motor fault-- temporary-- relay jammed open cant clear fault, failed gearbox reprogramming, Any pointers, where is relay ? thanks |
||
|
|
|
||
|
vincentfishing
|
|
||
|
Member No: #57297
Joined: Nov 26 2020Location: Westgate kent uk |
Just an update, only bought car for 450 so when offered 377 by online recycler let them take it, local scrappie reclamet only offered 270 , driver who collected car said good deal because government pays half of all recycled cars collected to get them off road and to try and stop breakers yards . | ||
|
|
|
||
Go to page <<
|
|
 User Colour Key:Head Administrator, Administrator, Forum Moderator, Forum Moderator, Premier Member, Technical Expert, New C4 and DS4 Forum Moderators, Member |
|
Site Disclaimer | Privacy Policy | Cookie Policy |Contact Details | Car Warranty | Sitemap | RSS Feeds | C4 Insurance | Tutorials | Quick Facts | Used Car Guide | Re Call Info | Offers | Service Reviews | Technical Documents | Error Codes
Theme by e107wORks© 
With Graphics from: Dave Forum Icons by Axialis Emotes by Seb
