C4 - DS4 Owners :: Forums :: Coupe and Hatch Pre 2011 cars :: C4 Coupe and Hatch (pre 2011) Problems? |
<< Previous thread | Next thread >>
|
C4 2.0 HDi Exclusive - Car Lumpy when cold & Cruise Control failure |
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 | ||
Macsimp |
|
||
Member No: #14505
Joined: Jul 08 2010Location: Worthing, West Sussex |
Hi I have an issue with my 2006 C4 which now has 160k miles on the clock. My problem started several months ago where on occasion shortly after driving of the car would lurch as if the engine had cut out then restarted within a split second. I then began experiencing issues on occasion where the cruise control would fail however on stop/starting the engine the issue would not remain. If I switch to limiter however when the car reaches the speed that the limit is set to the car would be very jumpy when trying to retain the set speed. On one occasion a few weeks ago the car also died on me when I pulled out on to a roundabout, however restarted ok. There was also an occasion were the car would not start one morning (not turning over), however on the 3rd attempt of turning the key all was OK. Then last week whilst driving on a motorway I lost power rapidly and dropped down to 30mph and although I was able to build my speed up slowly to 60 there was no real performance/power in the car. I pulled off at the next junction and the car died at the junction. once again however it restarted ok and performed fine after the restart. Now when I start the car it runs very lumpy as if it's not firing properly, I allow it to idle for a minute then it seems to drive ok albeit not perfect. I need to know if anyone has experienced this before or has any ideas where I should start with my investigations? Are all the above linked or should I be considering separate problems? |
||
|
|||
BigJohnD |
|
||
Member No: #82
Joined: Jan 22 2007Location: Hoylake |
Fuel filter? | ||
|
|
||
Dave_Retired. |
|
||
Member No: #1
Joined: Aug 07 2006Location: Northumberland |
Your existing thread (from August 2012 is here - Click Here - in which you failed to respond to suggestions made......... But have covered a further 17,000 miles since in the car? |
||
|
|
||
Macsimp |
|
||
Member No: #14505
Joined: Jul 08 2010Location: Worthing, West Sussex |
Sorry didn't spot that. I was told it was likely the turbo position sensor that was causing that. Someone suggested I unplug the MAF sensor which would determine if it was that, i did and any issues immediately stopped. Then forgot to update the forum to say I had done this so apologies for that. I see now you wrote 'Have a look at the turbo pipework joints for loose connections/leaks'. Can I get to them with the car jacked up or do I need to get it up on Ramps. Also can these issues be causeed by faulty glow plugs (never changed) or issues with the injectors. Don't want to start piling to much money investigating the problem as it may not prove cost effective to resolve but would like to do what I can to see if it is financially viable to resolve. |
||
|
|
||
Dave_Retired. |
|
||
Member No: #1
Joined: Aug 07 2006Location: Northumberland |
Glow plugs, (I would have thought) would only be an issue when starting or for the 1st couple of miles in post heat mode, not when driving. It could be many things one being the fuel filter as BJD says, a sensor somewhere, even the old favourite, the engine bay fusebox so you should start again by having the error code log read to see what, if anything shows up. |
||
|
|
||
Macsimp |
|
||
Member No: #14505
Joined: Jul 08 2010Location: Worthing, West Sussex |
OK I have read the codes and here is what I have P0102 - Mass or Volume Air Flow A Circuit low (This will be because I have the MAF disconnected) P113 - Intake Air Temp Sensor 1 Circuit High P1446 - Evaporative VAC Solenoid Circuit Malfunction |
||
|
|
||
Macsimp |
|
||
Member No: #14505
Joined: Jul 08 2010Location: Worthing, West Sussex |
Forgot to add, I have DPF and Additive warning up so not sure if these codes relate to that in case the codes prove to be a red herring. | ||
|
|
||
Dave_Retired. |
|
||
Member No: #1
Joined: Aug 07 2006Location: Northumberland |
Well you need to look at the temperature sensor and it sounds like the Eolys fluid is empty which is not surprising given the mileage |
||
|
|
||
Macsimp |
|
||
Member No: #14505
Joined: Jul 08 2010Location: Worthing, West Sussex |
I have the MAF unplugged at the moment due to issues with the Turbo Position Sensor, would P113 be related to that. I can plug in, reset the codes and see what comes up then. Would the MAF sensor still be causing an issue when it is unplugged? Also the main issue I seem to have now is that the car is very poor when starting (very lumpy) however when it warms up seems to drive OK. |
||
|
|
||
Macsimp |
|
||
Member No: #14505
Joined: Jul 08 2010Location: Worthing, West Sussex |
Plugged the MAF back in and only code showing now is P1446. Car would not start Saturday morning and was coming up with 'presence of water in diesel fuel filter' so following on from BigJohnD's suggestion I changed the fuel filter however car would still not turn over. Jump started car successfully and for first 20seconds it ran a but rough however soon settled down. I did notice that for the first 2 mins of idling there was white/grey smoke coming out of the exhaust and the engine was a bit smelly. Car drove perfectly however the strangest thing has happened. The ' depollution Filter' warning light has gone out??? Will wait to see what the next cold start brings! |
||
|
|
||
BigJohnD |
|
||
Member No: #82
Joined: Jan 22 2007Location: Hoylake |
Sounds good. Go for a motorway drive, 50+ mph for 30 min or so, get the turbo and exhaust system hot. | ||
|
|
||
Dave_Retired. |
|
||
Member No: #1
Joined: Aug 07 2006Location: Northumberland |
Sounds very much the same issues as this thread: - Click Here - . if the fuel filter change doesn't prove successful. | ||
|
|
||
Macsimp |
|
||
Member No: #14505
Joined: Jul 08 2010Location: Worthing, West Sussex |
OK have run the car for a few days now just to make sure I have a consistant position so here is the current position. There are no Warnings in the log to advise of any issues There are no error codes being picked up by diagnostics using an OBD2 reader. Car is very ropey/lumpy when started from cold (OK when restarted from warm) with white smoke coming from the exaust for first few mins. Car runs fine when warm but does jump/stutter occasionally Questions I need considered
|
||
|
|
||
Dave_Retired. |
|
||
Member No: #1
Joined: Aug 07 2006Location: Northumberland |
White Smoke Normally means that the fuel injected into the cylinder is not burning correctly. The smoke will burn your eyes. * Engine/pump timing out * Fuel starvation to the pump causing the pumps timing not to operate correctly * Low engine compression * Water/petrol in the fuel This time of year I would always look at the fuel filter 1st to ensure it's clean and there is no water in the system |
||
|
|
||
Macsimp |
|
||
Member No: #14505
Joined: Jul 08 2010Location: Worthing, West Sussex |
I did clean out the fuel filter housing completly and replaced the filter so there should be no water unless there is some in the tank. With regards to * Engine/pump timing out * Fuel starvation to the pump causing the pumps timing not to operate correctly Is there any way of testing this to find where the fault lies |
||
|
|
||
Go to page >>
|
|
User Colour Key: Head Administrator, Administrator, Forum Moderator, Forum Moderator, Premier Member, Technical Expert, New C4 and DS4 Forum Moderators, Member |