A8 Stalling: Bad Camshaft Sensor Causing Rough Starts

Had similar issues with an A6 2.8L (2003). The symptoms matched exactly, rough starts, stalling at idle, and check engine light. The camshaft sensor testing revealed the encoder wheel had worn down, affecting ignition timing and causing engine misfire. The repair involved replacing both the camshaft position sensor and the encoder wheel. This was a serious issue that required removing the valve cover to access the camshaft components. The engine control module was constantly receiving incorrect position data, leading to the erratic performance. The job required specialized timing tools and careful realignment of engine timing marks. While time-consuming, fixing it prevented potential long-term engine damage. If left unchecked, incorrect camshaft positioning can damage valves and pistons. Would suggest getting it checked soon, these symptoms typically worsen over time. The diagnostic process should include checking sensor voltage outputs and encoder wheel condition. Most shops with Audi experience will be familiar with this common issue on these engines.

Had similar issues with an A6 2.8L (2003). The symptoms matched exactly, rough starts, stalling at idle, and check engine light. The camshaft sensor testing revealed the encoder wheel had worn down, affecting ignition timing and causing engine misfire. The repair involved replacing both the camshaft position sensor and the encoder wheel. This was a serious issue that required removing the valve cover to access the camshaft components. The engine control module was constantly receiving incorrect position data, leading to the erratic performance. The job required specialized timing tools and careful realignment of engine timing marks. While time-consuming, fixing it prevented potential long-term engine damage. If left unchecked, incorrect camshaft positioning can damage valves and pistons. Would suggest getting it checked soon, these symptoms typically worsen over time. The diagnostic process should include checking sensor voltage outputs and encoder wheel condition. Most shops with Audi experience will be familiar with this common issue on these engines.

Had similar issues with an A6 2.8L (2003). The symptoms matched exactly, rough starts, stalling at idle, and check engine light. The camshaft sensor testing revealed the encoder wheel had worn down, affecting ignition timing and causing engine misfire. The repair involved replacing both the camshaft position sensor and the encoder wheel. This was a serious issue that required removing the valve cover to access the camshaft components. The engine control module was constantly receiving incorrect position data, leading to the erratic performance. The job required specialized timing tools and careful realignment of engine timing marks. While time-consuming, fixing it prevented potential long-term engine damage. If left unchecked, incorrect camshaft positioning can damage valves and pistons. Would suggest getting it checked soon, these symptoms typically worsen over time. The diagnostic process should include checking sensor voltage outputs and encoder wheel condition. Most shops with Audi experience will be familiar with this common issue on these engines.

Thanks for sharing your experience. I had similar sensor failure issues with my A8 last year. The symptoms you describe with the stalling and misfires sound exactly like what I went through. Ended up needing both the camshaft sensor and crankshaft sensor replaced to fully resolve it. Can you remember roughly what the repair cost was in your case? Also curious if youve had any related issues pop up since getting it fixed? Just want to compare experiences since these sensor problems can sometimes be tricky to diagnose properly.

Thanks for sharing your experience. I had similar sensor failure issues with my A8 last year. The symptoms you describe with the stalling and misfires sound exactly like what I went through. Ended up needing both the camshaft sensor and crankshaft sensor replaced to fully resolve it. Can you remember roughly what the repair cost was in your case? Also curious if youve had any related issues pop up since getting it fixed? Just want to compare experiences since these sensor problems can sometimes be tricky to diagnose properly.

Thanks for sharing your experience. I had similar sensor failure issues with my A8 last year. The symptoms you describe with the stalling and misfires sound exactly like what I went through. Ended up needing both the camshaft sensor and crankshaft sensor replaced to fully resolve it. Can you remember roughly what the repair cost was in your case? Also curious if youve had any related issues pop up since getting it fixed? Just want to compare experiences since these sensor problems can sometimes be tricky to diagnose properly.

Thanks for asking about the costs. Just had the repair done last week actually. The total came to 695 Euro to fix the failing camshaft position sensor and the defective encoder wheel. The sensor failure diagnosis was spot on, and the engine control system is now working perfectly. Haven't experienced any engine misfire or ignition timing issues since the repair. The shop found the encoder wheel had significant wear, which was causing incorrect readings and messing with the engine timing. They did a thorough job replacing both components. The engine starts smoothly now and maintains proper idle, completely different from before when it would stall and misfire. No related problems have shown up since the fix. Just make sure to go to a shop that really knows these engines, as proper installation and timing adjustment is crucial for these camshaft components to work correctly.

Thanks for asking about the costs. Just had the repair done last week actually. The total came to 695 Euro to fix the failing camshaft position sensor and the defective encoder wheel. The sensor failure diagnosis was spot on, and the engine control system is now working perfectly. Haven't experienced any engine misfire or ignition timing issues since the repair. The shop found the encoder wheel had significant wear, which was causing incorrect readings and messing with the engine timing. They did a thorough job replacing both components. The engine starts smoothly now and maintains proper idle, completely different from before when it would stall and misfire. No related problems have shown up since the fix. Just make sure to go to a shop that really knows these engines, as proper installation and timing adjustment is crucial for these camshaft components to work correctly.

Thanks for asking about the costs. Just had the repair done last week actually. The total came to 695 Euro to fix the failing camshaft position sensor and the defective encoder wheel. The sensor failure diagnosis was spot on, and the engine control system is now working perfectly. Haven't experienced any engine misfire or ignition timing issues since the repair. The shop found the encoder wheel had significant wear, which was causing incorrect readings and messing with the engine timing. They did a thorough job replacing both components. The engine starts smoothly now and maintains proper idle, completely different from before when it would stall and misfire. No related problems have shown up since the fix. Just make sure to go to a shop that really knows these engines, as proper installation and timing adjustment is crucial for these camshaft components to work correctly.

Thanks everyone for the helpful replies and suggestions. I took my A8 to a new mechanic yesterday and they confirmed it was indeed the camshaft sensor causing the problems. The diagnostic testing showed irregular voltage readings from the sensor, which explained the stalling and rough idle issues. The total repair came to 780 Euro including parts and labor. They replaced both the camshaft position sensor and cleaned the encoder wheel, though fortunately mine didnt need replacing. The mechanic showed me how worn the old sensor was and explained how it was affecting the engine control system. After the repair, the car runs perfectly again, no more stalling or hard starts. The engine control is much smoother and the check engine light is finally off. Really glad I got this fixed before it caused any bigger problems with the ignition timing or engine components. Much smoother experience with this new mechanic compared to my last one. They took the time to explain everything and show me the faulty parts. Would definitely recommend getting these sensor issues checked out quickly when they first appear.

Thanks everyone for the helpful replies and suggestions. I took my A8 to a new mechanic yesterday and they confirmed it was indeed the camshaft sensor causing the problems. The diagnostic testing showed irregular voltage readings from the sensor, which explained the stalling and rough idle issues. The total repair came to 780 Euro including parts and labor. They replaced both the camshaft position sensor and cleaned the encoder wheel, though fortunately mine didnt need replacing. The mechanic showed me how worn the old sensor was and explained how it was affecting the engine control system. After the repair, the car runs perfectly again, no more stalling or hard starts. The engine control is much smoother and the check engine light is finally off. Really glad I got this fixed before it caused any bigger problems with the ignition timing or engine components. Much smoother experience with this new mechanic compared to my last one. They took the time to explain everything and show me the faulty parts. Would definitely recommend getting these sensor issues checked out quickly when they first appear.

Thanks everyone for the helpful replies and suggestions. I took my A8 to a new mechanic yesterday and they confirmed it was indeed the camshaft sensor causing the problems. The diagnostic testing showed irregular voltage readings from the sensor, which explained the stalling and rough idle issues. The total repair came to 780 Euro including parts and labor. They replaced both the camshaft position sensor and cleaned the encoder wheel, though fortunately mine didnt need replacing. The mechanic showed me how worn the old sensor was and explained how it was affecting the engine control system. After the repair, the car runs perfectly again, no more stalling or hard starts. The engine control is much smoother and the check engine light is finally off. Really glad I got this fixed before it caused any bigger problems with the ignition timing or engine components. Much smoother experience with this new mechanic compared to my last one. They took the time to explain everything and show me the faulty parts. Would definitely recommend getting these sensor issues checked out quickly when they first appear.