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C4 with EGS - Fixed the juddering when taking off
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Biohead   
Tue Sep 18 2012, 01:30pm

Member No: #6049
Joined: Nov 05 2008
Location: Bracknell
 Check the connection between the Dongle and the OBD connector - there should be a big plug and socket between the two. Apply some pressure on the connector and try again. That's what I had problems with on the first Lexia, had to buy a replacement one to solve it.
isabeaux   
Wed Jun 19 2013, 11:23am
Member No: #29002
Joined: Jan 19 2013
Location: Slovenia
 Hi everybody,
just to bring this thread "out of archive". I've got serious problems with my EGS gearbox on 2008 C4GP. It judders really bad in 1st position as well as in reverse. So I've been pretty active last weeks, reading this and other similar threads really deeply and finally decided to buy Lexia from e-bay. So here is my problem:

I tried several times to program EGS gearbox as Lars described in the beggining of this thread. Let me say that I tried both softwares (old v3.47 Lexia as well as new v6.01 and updated Diagbox). Both cases are similar except that in the new one you should repeat the last step 4 times in a row while in an older software it is enough to repeat the last programming step two times in a row. These final steps represent the case where you go with a car onto the road and rapidly start and stop the vehicle.
So my problem is that I am not able to SAVE THE PROCESS after it is (at least seems to) FINISHED. So if here is any expert that can help me more precisely, what to do after the start/stop procedure is finished. I am following the instructions but in these final steps instructions are kind of deficient (insufficient).

So if I wrap up things: I am able to program the EGS gearbox - juddering dissaper, but after I go to the road and repeat the procedure regarding to instructions, from unknown reason the programming is not acceptable - juddering comes again.

Local garage says that the clucth is to be replaced. I really don't want to spend $$$ for a repair if there is no need to do it? Or I am wrong? I'm just wondering, why is the programming from the step 2 (clutch bitting point) OK, so if I'm right, the clutch should be OK? The car has got 130.000 km.

Thank you for any contributions you may help.
Dave_Retired.   
Wed Jun 19 2013, 01:20pm

Member No: #1
Joined: Aug 07 2006
Location: Northumberland
 Read: - Click Here -

But you can try the ' Hard Reset' method..... details here: - Click Here -
isabeaux   
Wed Jun 19 2013, 02:23pm
Member No: #29002
Joined: Jan 19 2013
Location: Slovenia
 C6 Dave - I know that instructions and followed exactly as described but no luck. I will try " hard reset" and see if something comes up. Regarding to that instructions: what exactly does "Power Latch" means in the line "If OK, switch off the ignition... ...(Power Latch)". I really need some clear step by step instructions in this part 3, when the vehicle goes to road and perform start/stop procedures, especially what to do exactly at the end.

Thanks again and cheers!
fatihkasa   
Sat Nov 22 2014, 12:39pm
Member No: #37991
Joined: Nov 05 2014
Location: turkey İzmir
 How can I re-calibrate my C4 2013 with EGS? Which version of Lexia can work? Or should I go to service dealer?
Dave_Retired.   
Sun Nov 23 2014, 02:20am

Member No: #1
Joined: Aug 07 2006
Location: Northumberland
 Re calibration process is covered in a FAQ - Click Here -
crapday   
Tue Sep 29 2015, 12:39am
Member No: #11964
Joined: Jan 05 2010
Location: Glasgow
 I done the Italian ( hard reset) re calibration. 0 to 60 as fast as you can letting the gearbox change up through the gears. It certainly worked a treat for me. No more juddering.
Datadogie   
Sat Jun 05 2021, 06:57am
Member No: #58219
Joined: May 25 2021
Location: Aberdeen Scotland
 I have a judder when cold also. Now I have gone and bought a Lexia from Fleabay and will give this a try following your PDF instructions. I have also just been watching a video of how to install Lexia and will have to look out my wife's old laptop as the donor computer. I just hope the battery is still OK.
LTL   
Sat Jun 19 2021, 10:42am
Member No: #58356
Joined: Jun 19 2021
Location: Northampton uk
 Good afternoon all, I'm new to this site and unsure if I'm even putting a new post up or replying to someone else's....sorry if I am.

I have a citroen C4 picasso on a 57 plate. I bought the car 8 months ago for £1200 and so far have spent just over £2000 in repairs and servicing for it.

I have already had a full service done a couple of weeks after purchase the car. At this point I was advised there was a small oil leak from the manifold but they had tightened the bolts and to just keep an eye. There was actually one bolt missing so I fitted a new one and the leak has subsided.
6 months ago:
it started making a noise when ever I was in 5th gear and then over the space of a day it went from just doing it in 5th gear to doing it in all gears so I took it to the garage. They told me that the gear linkage needed fixing and the gear box needed to be reconditioned so I paid for it all was ok for a couple of months
4 months ago:
I reversed the car then went into first and the car wouldn't move....apparently the linkage bar or something had broken and needed replacing so I again paid for that (I questioned why this wasnt included with the previous repair to be told they didnt think it needed it)

3 weeks ago:
i travelled just short of a 300 mile round trip and by the time i got home the car had gone into limp mode (it overheated i think) i had no warning lights what so ever.

2 weeks ago:
I had warnings of; anti pollution fault with the engine management light on continually. Esp/egr fault and limp mode after turn the car off and back on I lost the esp/egr fault and limp mode but have kept the engine management light and anti pollution fault since then.

This week:
Electric handbrake switch fault. I bought and replaced this myself and this fault disappeared.

Today:
Joining the motorway limp mode.

I have plugged a diagnostic in and the codes I am getting are as follows:
P0402
P1162
P0470
P0299
P1351

Alot of the codes are EGR related or exhaust my question is do I throw more money at it or sack it off as a bad job because I'm sick to the back teeth of the amount of work it has needed in the space of 8 months.
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