What is the solution for the buzzing noise at 2000 RPM in the X-Trail?
2 Answers
If there is abnormal noise during instant startup, it may be caused by the starter motor's gear not retracting quickly enough, resulting in flywheel gear grinding noise. The starter motor needs to be inspected. If there is abnormal noise during engine idle after startup, the fault point is likely due to excessive clearance between the hydraulic tappets and valves inside the engine cylinder head.
A buzzing noise occurs at 2000 RPM. I also experienced this when driving my X-Trail for five years. Typically, the main cause is aging or loosening of the exhaust system resonator, as the design leads to resonance at specific RPMs. I personally checked the tightness of the exhaust pipe bracket screws and found several loose ones causing the buzzing. After tightening them with a wrench, the noise reduced, but ultimately, replacing the resonator completely fixed it. I also checked the engine mounts for cracks—no issues there, which saved me money. I recommend starting the engine in an open area, holding it steady at 2000 RPM, and listening underneath to locate the source—if it's coming from the chassis, it's likely an exhaust issue. Avoid aggressive acceleration, as worsening resonance can damage the car. If all else fails, visit a Nissan dealership for professional repair—spending a few hundred yuan on parts can prevent bigger failures. Regular maintenance checks on these points will save you a lot of hassle.
