C5 2.0hdi vtr 2006 - depollution fault cold start trouble

[wizaird]

Hi all , I have an 06 VTR C5 HDI 6 speed 169000 miles manual car.Drove lovely until It developed a fault and I have had the RAC out to it to diagnose nd attempt to fix ...to no avail. It is currently at a local garage who specialise in French vehicles aparently ? Recommended by RAC.

In the mean time I would like to understand what has occurred and why ?
The vehicle has been running perfect until the beginning of last week.

Firstly having trouble starting up in a morning (I have to keep it turning over until it starts up as opposed to a quick turn of the key and off she goes)
Then a few days later I notice temperature guage isnt going up even though car heater is getting warm and seems normal ...strange.
Now on Sunday 2nd November I start her up but it seems to be running on 3 cylinders .showing DEPOLLUTION FAULT ..after a retarded sluggish drive for about 20 minutes and switching it off I stop it for ten minutes and then start it again and hey presto its back to normal apart from the Engine Management light staying on and remains good for the rest of the day ....eventually clearing the EM light. All be it temperature guage still not showing much movement ...

However Monday morning .....6am
Poor starting ..running on 3 cylinders .DEPOLLUTION FAULT..EM light back on ....take her for a 20 minute run ....switch off and then back on and its back to normal. ??????? Temp guage not improved .
Try again at dinner 1pm ......same again ? sluggish ...running on 3
Call the RAC ..

They plug in OBDe and come up with Injector No 2 Fault P0202 and EGR Valve P0406 fault.

They advised to take it to local repair specialist for Citoren in Loughborough whom have decided to have the injector tested first before going any further...as it was hard to start and running on 3 .....

My question is this ...has anyone had similar issues with their vehicle and if so what was at fault

I am suspecting something elctrical which cures itself when the vehicle gets warm (expansion) ???????

much appreciate any input on this .....

best wishes Dave

[Hell Razor5543]

It could be just a glitch. The C series Citroens are electrically sensitive (having a lot more electronics then previous Citroens), and sometimes get 'upset' by power issues. A BSi reset can clear these;

http://www.frenchcarforum.co.uk/forum/v ... 11&t=40407" onclick="window.open(this.href);return false;

The other thing is that normal fault readers don't always work on Citroens (or other French cars), so it could be worth arranging a Lexia session to see what it tells you. There are forum members with Lexias who are willing to help;

http://www.frenchcarforum.co.uk/forum/v ... 19&t=29178" onclick="window.open(this.href);return false;

Welcome to the forum, by the way.

[darbuck]

I've a mk1 hdi doing similar I think its a faulty maf or the exhaust which is now blowing a bit

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[wizaird]

Hi thanks for a speedy response ....I wondered if the RAC used a lexia code reader ?

Also what do you think is causing the temp guage failure ? Thermostat ....sensor .........will this affect cold starting?

thanks Dave

[Hell Razor5543]

Probably not, but the reader they will have used will be a professional unit that can, at the very least, read the fault codes. However, a Lexia can read live data and display it in meaningful graph displays (as well as a whole lot more).

[wizaird]

Hi , I have passed on the information to the garage via email regarding the battery and BSi reset as I did change the battery on Tuesday last week ...I simply swapped it ...and drove it. Was not aware of any procedure. I dont want them looking to put new bits on it and not fixing the problem .....so I think giving them the heads up will be a breath of fresh air and hopefully a result....

Will keep this post informed...best wishes Dave .

[darbuck]

It sounds like the coolant temperature sender unit is faulty theyre small money less than a score dont swap anything out to find out if maf is faulty unplug it and drive the car for a mile or so if it improves theres your problem but dont continue driving unplugged as it would damage engine if left off

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[wizaird]

thanks Darbuck

acknowledged and will reply with update.

thanks Dave

[wizaird]

recieved a call from the garage today saying the injector was tested and is deemed inoperative.
I have requested a second hand one be fitted due to the excessive price of new ..this should be on the vehicle by Saturday all being well and then they will continue with the repair.
I wonder how many 2006 C5 2.0 hdi vehicles suffer an injector failiure ?
I am thinking it is something to do with the contacts on the solenoid connection ..with the fact that the car runs fine when it is hot and has been switched off an restarted ?

keep you updated as soon as I know more...Dave

[Stickyfinger]

169K on a 2ltr ?.....I think the injector did very well.

Good luck and I hope it fixes it all, its amazing what a correctly completed reset will do, just like a Windows-XP restore

[KP]

Is it a 2.0 16v HDi?

Does it smoke and idle roughly for a little once started from cold? a kind of blue/black smoke?

If the answer is YES to both of the above then the issue is going to be a leaking injector and the others wont be far behind.

Get them all done and be done with it as you'll only end up repeating the excercise again

Once all the faults are cleared the ECU should be able to retrigged the DPF regen without issue so plan for a nice 1hr drive without any traffic and along a nice stretch of motorway at about 60mph with the cruise control on and it should purge nicely

and in answer to your question, the 16v's suffer at some point or other before 200k where as the 8v ones seem to go on forever!

[wizaird]

Ok folks... Had the call today to say my new second hand injector was fitted and the cars faults were cleared;; running fine.
Checked the Temp sensor and this is faulty yet thermostat is ok . We therefore have decided to run the car for a couple of weeks before sorting the temp senso.... Just to make sure all is good with the injector and not invite any further faults by changing the temp sensor.

If my car runs ok with no issues for these 2 weeks then I will get the temp sensor sorted.

cost so far is 195 including second hand injector, testing of old injecto, diagnostics be fault clearing.
Seems very reasonable to me... Hats of to Charnwood Cars at Loughborough and Jim the technician.

will keep this post running to update how the car gets on and whether the temp sensor will come good with some electrical contact spray.
thanks for all your input so far to all. It I'd much appreciate.... Regards Dave

p.s does anyone recommend the full Bci reset ?

[darbuck]

Good to hear its sorted dave

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[wizaird]

Ok ...update .
Today took it for a 60 mile run around and initially noticed that fuel consumption seemed higher ....in other words it had dropped to around 28-30 mpg running around town etc ...on the highway it was up to around 42 mpg however it was highere the other week easily making 50+mpg.
I decide to open it up in 3rd gear and around the 3000 -4000 rpm at about 55mph it had a little twitch then the depollution warning light came on followed by ASR ESP fault ....engine warning lamp came on along with the CAR SWERVING lamp in the top left. When I stopped and restarted the CAR SWERVING LAMP had gone off but engine management lamp is still lit.
Car seems to be running ok however I can get it to put the Swerving warning lamp on by accelerating hard ?
The weather is very wet round here and I have read somewhere that the air intake may have drawn in water due to it location and the wet weather making the air filter damp ?

Any ideas on this new fault would be much appreciated.

I am thinking of checking this air filter tommorrow and also doing a full reset.

best wishes Dave.

[wizaird]

Well we are on Tuesday and I have this reoccuring ASR ESP Depollution Fault when accelerating beyond 3000 rpm in 3rd or 4th gear .
It seems to miss a beat and then the light comes on with the warning. This warning lamp goes after a few restarts during the course of the day but returns when accelerating beyond the 3000 rpm.

A puzzle , a conundrum ...........not sure where the source of this fault is ..any input would be most welcome ..

thanks Dave