A6 TDI Power Loss: Intake Manifold Flap Fix Needed

Had similar symptoms on an Audi A4 2.0 TDI from 2005. The engine light triggered due to intake manifold flap failure. The intake system was restricting proper airflow control, causing power loss and rough running especially during acceleration. The repair involved replacing the complete intake manifold assembly as the flaps were stuck and causing improper air distribution. This was indeed a serious issue since the faulty manifold flap was causing increased fuel consumption and could have led to further engine damage if left unaddressed. The repair process included: Full diagnostic scan, Removal of intake manifold, Replacement of complete manifold unit with flap motors, Reset of engine management system, Test drive to confirm proper airflow control This is a known issue with these engines and requires proper diagnosis and repair by someone familiar with VAG intake systems. Would recommend finding a specialist who regularly works on these engines, as correct calibration after replacement is crucial for optimal performance. The engine light should clear after repair and normal power should be restored. The hissing sound you describe is typical of a failed manifold flap allowing excess air to enter.

Thanks for sharing your experience. My car had nearly identical symptoms and the repair solved the problem completely. The engine misfire issues disappeared right away and fuel consumption went back to normal. Just curious, would you mind sharing how much you paid for the full repair? Also wondering if you had any other issues pop up since getting it fixed? I heard sometimes the intake manifold problems can mask other underlying issues that show up later.

The intake manifold flap control issue was completely resolved during my mechanic visit two weeks ago. The total repair cost came to 465 Euro, which included the replacement parts and labor for fixing the defective intake manifold control switch. Since the repair, engine performance has been flawless with no engine misfire issues or airflow control problems. The engine runs smoothly during acceleration, and fuel consumption has returned to normal levels. The hissing sound is completely gone, confirming that the manifold flap is now functioning correctly. No other issues have surfaced after the repair. The key was having a proper diagnostic done first to pinpoint the exact problem with the flap control system. A well-executed repair of the intake manifold typically resolves all related symptoms without masking other problems. The repair has proven to be worth every cent, as the car now performs like it should. The engine management light has stayed off, indicating all systems are operating within normal parameters.

I took my car to a specialist mechanic last week who properly diagnosed and fixed the intake manifold issue. The total bill came to 430 Euro, which included parts and labor. I felt the price was fair given the complexity of the repair. The mechanic showed me the faulty intake manifold components before installing the new parts. The engine performance improved immediately after the repair, no more jerking during acceleration and the hissing sound completely disappeared. The engine light turned off and has stayed off since. Fuel consumption is now back to normal levels and the engine runs smoothly. It was definitely worth finding a qualified mechanic who understood these engine systems well. Having proper airflow control restored has made a huge difference in how the car drives. After two weeks of driving, no other issues have appeared. The specialist did a thorough job testing everything after the repair to ensure the intake system was working correctly. Really glad I got this fixed before it could cause any additional engine damage.