Noise problems with the 2007 Opel Signum: Possible cause is the exhaust flap

Hey, this reminds me of a similar problem with my Opel Vectra from 2009. The loud roar when starting and noise from the engine compartment were also the main signs with mine. I immediately thought: exhaust flap defective! I took it to my trusted garage. They immediately identified the fault and it was exactly as I suspected, the exhaust flap was defective. So yes, the way you describe it suggests that the exhaust flap is the cause. This is not to be trifled with, because if the flap is constantly jammed or stuck, this can severely impair performance and also lead to higher fuel consumption. A tip from someone who has already experienced it: take your car to the mechanic as soon as possible. Depending on the condition, the flap may need to be repaired or replaced completely. It's better to take care of it early on before it gets worse and other parts are affected. As you know, prevention is better than cure. In my case, by the way, a replacement was necessary. I hope this helps you!

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Hi, thanks for your insight! It does indeed sound like it could be the exhaust flap in my case too. As you say, better to act early before it gets worse - I totally agree. Do you happen to remember how much the replacement cost you? And have you had any other problems since then that may have been caused by it? Many thanks in advance for your help!

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Hey, you're welcome, always ready to help here in the forum! So, the whole thing cost me €190 at the time to get the exhaust flap back up to scratch. Yes, it's not exactly cheap, but you know how it is with cars. It's better to invest early before it gets really expensive. And to answer your question: I haven't had any further problems since the replacement. In my opinion, the mechanic did a solid job. The background noise has been blown away since then and the roaring exhaust noise is also a thing of the past. Even the fuel consumption seems to have improved a little. So don't wait too long to have it repaired! It was an annoying job, but it was worth it in the end. Hope this helps you on your way! Henning.

(Translated from German)

Hey Henning, the detailed answer helps me a lot! I think I will definitely have to make an appointment with a mechanic. It's reassuring to hear that you haven't had any further problems since then, that gives me hope. Thank you so much for taking the time to share your experience. Your recommendations are really worth their weight in gold. I wish I had thought to ask the community for advice sooner. Have a great day!

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