After some highway driving, I noticed a loud ticking noise on throttle, coming from the right side of the engine. It sounded like wastegate rattle at first, but is much louder and more pronounced. When I came to a stop, the car had a rough idle and felt like it wanted to stall out. I scanned the car and there are no fault codes.
What makes this problem better or worse?
Car drives fine at higher speeds, bogs down at lower RPM and idle
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Hi, my name is Devin. I am an auto repair expert with the Car Genius team here at RepairPal. I’m sorry to hear you're having trouble with your vehicle.
If your 320i is making a loud ticking noise during turbo spool and experiencing a rough idle, it could be related to a few potential issues. The ticking noise might be due to a loose or damaged component in the turbo system, such as a wastegate actuator or a cracked exhaust manifold. The rough idle could be caused by a vacuum leak, a faulty sensor, or an issue with the fuel delivery system. Since there are no fault codes, it might be a mechanical issue that isn't triggering any red flags yet. I recommend checking for any loose or damaged components around the turbo and intake system. It may be best to have a professional inspect the vehicle to accurately diagnose and address the issue.
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