Nissan NV1500 whistling noise at speeds of 45 mph or faster on Nissan NV1500

Some Nissan NV1500 owners report experiencing a whistling noise at speeds of 45 mph or faster, which may be linked to several potential issues. These include high-pitched noises that could relate to brake and rotor resurfacing, as well as whining sounds at constant speeds over 50 mph that may indicate problems with the CVT chain. Additionally, a winding sound resembling a remote control car at speeds of 60 mph or higher is a concern that should be investigated. Owners also note front-end noise at low speeds, particularly when braking or accelerating, which may signal underlying problems. At higher speeds, some report howling or whining noises that could stem from worn ring and pinion gears or improper gear setup, while rumbling or whirring sounds over 20 mph might be attributed to worn carrier bearings. It is also advised to check for loose hoses or fittings that could cause vacuum leaks, as well as other potential culprits such as slipping belts, exhaust leaks, or valvetrain issues. Given the variety of possible causes, it is recommended that owners consult a professional mechanic for a thorough inspection to accurately diagnose and resolve the whistling noise.