Boxster's Mystery Stall: Rough Running & Power Loss Help

I had very similar issues with my 2010 Cayman last summer. The symptoms were exactly like yours, rough idle, jerking, and power loss. Turned out it was a vacuum leak from cracked hoses. My mechanic found multiple deteriorated hoses that were causing air to leak into the system. Had all the vacuum hoses replaced and added a few missing ones that had completely fallen apart. It was a serious issue that needed immediate attention because it was affecting the air-fuel mixture and could've led to bigger engine problems if left unfixed. The car runs smooth as silk now, but make sure you find a Porsche specialist. Regular mechanics might miss some of the model-specific routing and connections. I've been using the same specialist for years now, these cars need someone who really knows their stuff. Hope this helps point you in the right direction!

Thanks for sharing your experience! This really sounds similar to what I'm dealing with. My local Porsche specialist diagnosed the same issue with vacuum hoses last week and I've just had them replaced. Just curious, do you remember roughly how much you paid for the repairs? And has everything been running smoothly since, or have you noticed any other issues pop up?

Hey again! Great to hear back from you, and glad I could help. Yeah, after I got the hoses fixed plus that faulty tank vent valve sorted out, my Cayman's been running like a dream! The total bill came to 175€ for the hoses, which honestly wasn't as bad as I'd feared. Sometimes with these cars, you brace yourself for much worse news, right? It's been smooth sailing since then, no more jerking, stalling, or any of that drama. Honestly, getting it fixed was such a relief. These Porsches can be pretty sensitive to vacuum issues, but once you get them sorted, they're solid as a rock. Just make sure you keep an eye on those hoses periodically. They can deteriorate over time, especially in older models like ours. My mechanic suggested a routine check every service just to catch any potential issues early. Let me know how yours runs after the fix! Always good to share experiences with fellow Porsche owners.

Hey, just wanted to update you guys on my Boxster situation! Got it back from the shop yesterday, and what a difference! The mechanic I found through your recommendations was spot on. Similar to your case, my repair bill was around 200€ for the hoses and labor, which was a huge relief considering I was expecting much worse. Took it for a proper drive this morning, and it's like having a completely different car, no more jerking, stalling, or any of that nonsense. The engine's purring like it should, and the power's back to normal. Such a relief after weeks of dealing with those issues! Thanks again for sharing your experience, it really helped me make the right decision. And yeah, I'll definitely keep an eye on those hoses during future services. Sometimes it's the simple things that can cause the biggest headaches with these cars, right? Really appreciate all the help from this community. Nothing better than getting advice from people who've been through the same thing!