Audi A7 Engine Light + Air Valve Issues Need Help

Having experienced similar symptoms on my 2013 Audi A5 last winter, this sounds like a vacuum hose issue that connects to the air valve system. When mine failed, it caused irregular idle problems and triggered the check engine light. The main issue was a deteriorated hose connection from the vacuum pump to the air intake valve. These parts naturally degrade over time, especially around the 150000 KM mark. A failing connection allows excess air into the system, disrupting the proper air-fuel mixture. The repair turned out to be significant since accessing the components required removing several parts to reach the affected area. The vacuum hoses needed complete replacement as they had become brittle. The symptoms matched exactly, inconsistent idle speed, check engine light, and reduced performance. Watch out for these additional signs: Rough idle when the engine is warm, Whistling sound near the engine bay, Decreased fuel efficiency, Hesitation during acceleration Best to have it checked soon, as running with faulty vacuum hoses can affect other engine components over time. The air intake system is crucial for proper engine operation, and these issues typically dont resolve themselves.

Thanks for describing those symptoms. Im dealing with the same vacuum leak indicators on my A7 right now. The engine stalling and rough idle problems match exactly what I experience, especially after the engine warms up. Just curious, do you remember the total repair cost for fixing those vacuum hoses? And has everything been running smoothly since the repair? Planning to take mine in next week but want to get an idea of what to expect cost-wise.

Just wanted to update on my A5 repair situation since several asked. After seeing the mechanic, the diagnosis confirmed our suspicions about the manifold pressure issues caused by the faulty air valve connection. The total repair came to 175 Euro, which covered replacing the deteriorated hose connection from the pump to the valve. The vacuum leak was exactly where I thought, right at that connection point. Since fixing it, the engine stalling problems completely disappeared and the idle is perfectly smooth again. The air intake system is working flawlessly now, no more check engine light or performance issues. It has been running great for several months with no signs of the previous problems returning. The repair was definitely worth it to prevent more extensive engine damage. For your A7, it sounds like an almost identical issue, so the repair cost should be in a similar range. Getting it fixed promptly is smart since these vacuum leaks tend to worsen over time and can affect other components.

Perfect timing for an update on my A7 repair experience. Finally got it checked out at a shop and they confirmed exactly what was suspected, vacuum leak near the air intake manifold. The repair was straightforward but accessing the components took time. Total bill came to 220 Euro for parts and labor. They replaced two deteriorated vacuum hoses and a cracked fitting that was causing the air supply issues. Check engine light cleared up immediately after the fix. The idle problems are completely gone and the engine runs smooth again. No more stalling or rough running when warm. The repair shop showed me the old parts, they were definitely worn out and causing the air leak. Glad I got it sorted before it led to bigger issues. The A7 feels like new again and the peace of mind was worth the investment. Will definitely keep an eye on these components during future maintenance to catch any early warning signs.