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Update on this running issue.
I bought a fuel additive called Hydra Maximius off ebay and it seems to have solved the running problem.
It was a good few months ago but thought I'd wait a while incase it was a coincidence.
I did try a different additive liqui moly before with slight improvement.
Maybe combination of the two sorted it
But the Hydra definitely made a noticeable difference.
It was embarrassing as I'd pull out and hardly accelerate then the van would back fire and tear off like I was deliberately holding the traffic up
Definitely don't bin those seats. They're the same style as in our 05.
I looked into getting a new drivers seat cushion from Citroen and was quoted over £400.
The problem is they can't be recovered as the foam is sprayed onto the material.
That style drivers seat in such good condition is rare as they're not very hard wearing, the foam breaks down along the edge of the seat and then metal seat frame holes the material
Ah ok thanks. I did already try taking vacuum pipe off the egr solenoid and blanked on a bolt end, I think I followed a YouTube clip.
I didn't know the other was connected with the turbo.
The turbo itself seems to work really well, when that kicks in the van is away.
Thanks. Has to be worth a try.
Not sure where these solenoid valves are located, maybe will become clearer when I look for them.
I can certainly check the rubber pipes and clips
Ha. I'm not scared. Honest.
I know this is a good van, really kept on top of the jobs as things have arisen.
I've seen these with massive mileages for sale so at 150,000 I don't think the engine is even half way through its life.
The van is a 6 seater and been a family car for my sister for the last 8 years.
Money and time spent on this one is definitely an investment and intend to keep hold of it as long as we can afford the ever increasing road tax.
Well thanks Ken & John for taking the time to reply and sharing your expertise, you've helped me rule out some possible causes.
When I find out exactly what the problem is I'll update this post.
It might be some time as read that Wynns Formula Gold sorted a Citroen C5 hdi with a similar problem so going to run that through the system in the next fill up before spending on diagnostics or parts
Yes flow test was a success. High flow / volume out of the filter from the housing outlet to high pressure pump.
Battery terminal clamp is nifty but even better got a trusted passer by to help.
Relieved to know that I don't have to delve into the diesel tank.
Thanks, I'll do a flow test today.
The fuel filter was changed a few months ago, I did have an issue with the sealing ring once but it's not leaking now.
Temperature is good, when van is driven for a long period it settles around 80 degrees from memory.
Will report back
Thanks for that.
I guess starting at the tank and working from there makes sense, I wasn't aware that there is a pump in the tank.
It's the stopping the engine running Lumpy, immediately restart running smooth that baffles me.
Like something has reset when it's switched off.
Hi all. Been a spectator on this site for a few years now.
Hope someone can direct me in the right area with our problem.
We've had our 2005 enterprise 2.0 hdi for maybe 8 years and has been very reliable.
It has developed a fault where it starts and ticks over lovely until the accelerator is pressed then the tick over becomes lumpy.
Stop the engine and start it again and everything reset to being fine.
Try driving it especially when cold and it has a massive turbo lag which becomes a bit dangerous sometimes pulling onto busy roads,
Once engine speed has eventually increased the van is off like a scalded cat.
I've read as much as I can find on similar faults with variants of this engine in different vehicles.
I disconnected the maf sensor and EGR vacuum pipe but these make no difference also added diesel treatment last fill up.
There are no warning / management lights coming on.
I don't mind getting any faults downloaded at a garage, but thought I would ask here first.
Was wondering if it might be the fuel rail pressure sensor.
Thanks
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