2.0 hdi Clutch issue (C5 x7 2009)

[admiral51]

Steveo how many times have you revved the car to 1500 and set off in reverse ?
Anti stall will be less noticeable in reverse as your senses are more focused on what is around you. Yep sounds stupid but going forward you tune out hear things, going backwards you tune out and focus on where you are going mainly because it is something you do less often.
How we explain the amount of reversing into bollards etc i still have no answer for

Colin

*** EDIT***

Ok so maybe 100% wrong as usual but does a TPS need to be calibrated so it knows off/on etc?
Could it be that the TPS has been changed in the past and not calibrated correctly

[Steveo]

Hi Colin
Thanks for the reply
You are correct I don't set off in reverse at 1500 revs but neither do I set off in first gear at 1500 revs in normal circumstances.
The point I am trying to get across is the amount of revs lost due to lifting the clutch to take up the drive is wrong
As soon as the clutch pedal is released the revs drop like a stone it can be 1000 revs 1200 revs etc.
I have owned a Peugeot 406, (2x)407 and I drive council vehicles for a living and I have never had or seen this style of driving.
As I mentioned in an earlier post quite a few of these vehicles seem have a similar fault but others seem to be OK, this suggests to me that it should be possible to fix the problem if I can find out what's wrong, that's the hard bit.
Edit
I don't know enough about the car to comment on the calibration of the TPS


Regards
Steve

Hope this helps

[admiral51]

Steve i am no mechanic, i just remembered that i had a TPS changed on a HGV and had to have it calibrated and being me i asked why.
Got the reply that its similar to a window winder, it will work go up and down but does not know where top and bottom are, it needs to be told.
You can tell he knows me well, no techy stuff just simple explanation so i could get a grip on it.
I would think that a TPS issue would throw a fault code up but not maybe put the MIL on.

Just thinking aloud, bad news for everyone.

Colin

[Steveo]

Hi Colin
Any help is welcome I appreciate the input
Regards
Steve

[GiveMeABreak]

Bear in mind that the TPM in the accelerator pedal also has fault codes for any issues and has a double track for backup / cross checking. If there was any fault here regarding the position info it would report a fault in Diagbox.

[ridah2003]

Hey Steveo

I have C5 since 6 months or so, and been struggling with the same clutch issue you have. Actually I'd ignore it (I just get used to it after few weeks) unless my father bought himself a similar one 2 months ago - we both have exclusive with manual transmision - so I had a chance to make comparison with both of the cars. The result is that his car is pulling perfectly from the start. The clutch seems to be softer and it excuses rapid releasing of the pedal - not like mine. From that time I am sure there's something wrong and started to dig deeper - I was thinking about the clutch plate, dual mass flywheel but now I think the solution is more simple.

The interesting thing with my car is that there were no errors either in cabin display or DB. But since January when we had in Poland rough winter which (I thought at that point) caused "Parking system fault" and "Anti roll back system fault" along with SERVICE highlighted on my dashboard. In the beggining it was popping like once a week, when the temperature was around -5 or even less. In the result the anti roll back was not working as well as automatic handbrake after switching off the engine. The handbrake itself worked normally when I switch it on/off with the button. After starting the engine errors were gone and all worked until it showed up again. The problem is, I started to get this error every time now (even with +10 degrees) which is really frustrating. I searched some polish forums and found out that it might be clutch switch fault. Next week I am going to make it sure with DB that errors are connected with this sensor and replace it eventually. I also hope to get rid of this tough clutch which makes me jealous of my father's C5...

I will keep you informed!

If you've already solved the problem let me know!

EDIT1: I just want to add that today I compared again both of our cars and in my father's car when I put revs to 2000rmp on idle and release the clutch pedal, revs are reduced a bit (~200rmp) for like a second and then they restore. In mine they remain the same all the time, regardless pressing or releasing the clutch pedal.

[Steveo]

Hi
I've still not sorted it and have disconnected the clutch switch and it made no difference, this doesn't mean it isn't the switch as mine may not work as intended
Please kerp me informed on your progress
Regards
Steve