please help .. i was trying to solve this buzzing sound and created a much bigger problem. i cleaned and replaced the ICV (13411744713). but after replacing the ICV, the engine misfires and makes a loud clack sound. see the diagnostic reports and video below.yeah old post but exactly my current problem.. the buzzing does sound electrical. i am going to unplug the disa and see if it goes away. i tried swapping disa but same buzzing with the key in position 2. as several have indicated, it will probably be the ICV.
- first diagnostic report after replacing ICV : pending P0301, P0302, P0303, P0304, P0305, P0306 (misfire all cylinder numbers), P0171, P0174 (system too lean)
- second diagnostic report : confirmed (misfire all cylinder numbers) and pending P0300 (Random/Multiple Cylinder Misfire Detected)
- video of clack sound
i don't think the ICV is the problem, because i swapped both DISA and ICV with the same model car and the other car runs fine. maybe i damaged something else in the reinstall? i reseated the ICV in the rubber tube and problem persists.