My first post and hoping someone can help me!
2001 Citroen C15D with 1.9 DW8 engine (same as Berlingo, Partner, 206 etc etc.) developed a running problem yesterday on the motorway in heavy rain. It started to hesitate & pull back at about 60 mph, it would move on to 70 but much more slowly than usual. Problem became more and more noticeable and started to come in at lower speeds (40 and then 30) but was to some extent intermittent - in other words it didn`t do it every time acceleration was required. Fuel tank was about a quarter full when problem appeared and therefore it seemed to get worse as the tank emptied.
Today, in dry weather the problem was still there and just maybe there was more smoke from exhaust. Van was due a service (it has one every 6k; its done 84k by the way) so I did that straightaway - all filters changed and had a good look at some diesel I drained from the fuel filter - it looks fine no sign of water which I half expected... I checked all the vacuum hoses associated with the EGR gear - all look OK, and gave all the engine electrical connectors and wiring a visual check; I then went further and cleaned all the muck off the EGR valve but it was moving freely. As you`ve guessed, problem is still there - engine management light came on briefly whilst I was revving engine to check for smoke - there is some but not really excessive. It starts perfectly and sounds normal and I only see an occasional bubble in the fuel heading to the inj. pump.
I am not familiar with the electronics on this engine and don`t know how to access the fault codes if there are any. Then again it might not be an electronics fault! I haven`t re-fueled yet - could still be a bad diesel issue. What does anyone think? Is this a well known problem with the DW8 engine?
Other info: cat and rear exhaust were replaced due to rust/cracking about 4 months ago; twice earlier in the summer engine suddenly became very noisy, stopping and switching off cured this and it has not re-occurred.
I`ll shut up now and wait for some wiser heads than mine to make some suggestions.