Hi all, just noticed on my C5 X7 tourer, 2.7 V6, auto (mainly when engine is cold) when I hover around 2000rpm (just before gear change) or if I slightly press the accelerator (cruising behind someone) the engine judders a little... if I accelerate over the 2000rpm or change manually into gear I don't get it...
Nothing major, but it is annoying - any ideas?
C5 X7 2008 V6 auto judder
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- Stickyfinger
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Re: C5 X7 2008 V6 auto judder
Mileage ?
Citroen claim "sealed for life gearboxes", not true. If over 100k/130k have the oil in the gearbox changed. Changed in sets of 3 drains/refill and a reset of the oil counter by Lexia.
Citroen claim "sealed for life gearboxes", not true. If over 100k/130k have the oil in the gearbox changed. Changed in sets of 3 drains/refill and a reset of the oil counter by Lexia.
Alasdair
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Activa, the Moose Rider
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Re: C5 X7 2008 V6 auto judder
It has just over 82,000 miles....Stickyfinger wrote:Mileage ?
Citroen claim "sealed for life gearboxes", not true. If over 100k/130k have the oil in the gearbox changed. Changed in sets of 3 drains/refill and a reset of the oil counter by Lexia.
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Re: C5 X7 2008 V6 auto judder
Could be an EGR valve failing. Very common on this engine (and many other Diesel engines).
I had this with a C6 2.7HDi (same engine).
Slight hesitation on light throttle at 1750rpm.
Lexia diagnostic initially showed an 'airflow' fault.
There are two EGR valves on this engine and access to change them is 'interesting', workshop time is 4-5 hours to change each one.
I had this with a C6 2.7HDi (same engine).
Slight hesitation on light throttle at 1750rpm.
Lexia diagnostic initially showed an 'airflow' fault.
There are two EGR valves on this engine and access to change them is 'interesting', workshop time is 4-5 hours to change each one.
Shaun
C6 3.0 HDi Exclusive - 2010
SM 3.0 - 1972
DS 23 Pallas - 1975
GSA Pallas C-Matic - 1982
C3 Pluriel - 2009
C6 3.0 HDi Exclusive - 2010
SM 3.0 - 1972
DS 23 Pallas - 1975
GSA Pallas C-Matic - 1982
C3 Pluriel - 2009
Re: C5 X7 2008 V6 auto judder
Thanks for the help.... my local main dealer said nothing came up 'on the lexia' last week (car was in for a service)....hattershaun wrote:Could be an EGR valve failing. Very common on this engine (and many other Diesel engines).
I had this with a C6 2.7HDi (same engine).
Slight hesitation on light throttle at 1750rpm.
Lexia diagnostic initially showed an 'airflow' fault.
There are two EGR valves on this engine and access to change them is 'interesting', workshop time is 4-5 hours to change each one.
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Re: C5 X7 2008 V6 auto judder
So the 'fault' must be in your imagination - computers are always right.c5rich wrote:Thanks for the help.... my local main dealer said nothing came up 'on the lexia' last week (car was in for a service)....hattershaun wrote:Could be an EGR valve failing. Very common on this engine (and many other Diesel engines).
I had this with a C6 2.7HDi (same engine).
Slight hesitation on light throttle at 1750rpm.
Lexia diagnostic initially showed an 'airflow' fault.
There are two EGR valves on this engine and access to change them is 'interesting', workshop time is 4-5 hours to change each one.
Unfortunately, software is specified, designed and written by fallible human beings; and today far too little testing is done before software is released. When I started as a trainee programmer (1968), I was told to expect to spend 10% of my time writing (assembler) code, and the other 90% testing. That ratio is probably reversed today, with, I hope, the exception of avionics; triple redundancy doesn't help if the three 'separate' systems all have the same software with the same undiscovered deficiencies.
2011 Grand C4 Picasso VTR+ 1.6HDi in Kyanos Blue
1995 Xantia Estate SX 1.9TD in Vert Vega "The Green Lady" - after 11 years now owned by XanTom
1998 Xantia 2.1 VXD Estate in Mauritius Blue - R.I.P. (terminal tin-worm)
1995 Xantia Estate SX 1.9TD in Vert Vega "The Green Lady" - after 11 years now owned by XanTom
1998 Xantia 2.1 VXD Estate in Mauritius Blue - R.I.P. (terminal tin-worm)