AlBeckRacer
Erratic engine running and loud hissing in a Citroen C8 diesel from 2006: experience with swirl flap control on the intake manifold
(Translated from German)
Summary of the thread
A 2006 Citroen C8 diesel is experiencing erratic engine performance, rough idling, and a loud hissing noise when accelerating, with the check engine light on. The suspected issue is a malfunctioning swirl flap control on the intake manifold. A similar case with a Citroen C5 involved replacing the broken swirl flap, which resolved the problem. It is advised to have the vehicle checked and repaired promptly to prevent further damage.
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4 comment(s)
AlBeckRacer (community.author)
Hi, thanks for your quick reply and support. Your experience sounds pretty similar to mine, and it sounds like I really should see a mechanic. Could you remember how much you paid for the repair at the time? And were there any other problems with the swirl flap or intake manifold after that? Any more information would be really helpful. Thanks a lot!
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Arnoluth
Of course, I can still remember that. We also had the fault with the swirl flap control on the intake manifold rectified by the mechanic. The swirl flap was broken on my C5 at the time and had to be replaced. The whole thing cost me €865 - yes, unfortunately that was a pretty hefty price. But I decided it was worth it, because I wanted to avoid further damage and keep my old girl going for a bit longer. And so far I haven't had any further problems with the swirl flap or the intake manifold - everything runs like clockwork. So, I would recommend you visit the mechanic and get the problem with the swirl flap fixed. Sure, it might cost a bit, but it's definitely worth it. Hope this helps you!
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AlBeckRacer (community.author)
Hi. Wow, that's definitely a lot of money, but I think you're absolutely right. I want to keep my old girl for a while longer and it's definitely better to avoid potential damage. Your experience is very reassuring and I feel more confident to visit the mechanic now. I really thank you for your kind advice and information - it was very helpful. I'm going straight to the mechanic tomorrow morning. Wish me luck!
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Arnoluth
Hello, I had a similar problem with my 2009 Citroen C5. Let me tell you what I did. There were also the symptoms you described, such as hissing when accelerating and shaky engine running. In the end, it turned out that the swirl flap was broken. After some research and a visit to the garage, the mechanic replaced the swirl flap and made the necessary adjustments to the intake manifold. It wasn't an easy job, but it was definitely doable. So it's quite possible that your C8 has the same problem. Be sure to have it checked, because if the swirl flap fails completely, it can cause serious problems. In any case, start the repair as soon as possible. Hope this helps you a little!
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