Mazda Master technician has changed belt, pully & tensioner. Says was 100% pully. Wrong diagnosis.
$800 spent . Sound comes on cold start, not on idle but once placed into drive mode, small chirp then when driving a low rattles sound from engine / passenger area. After vehicle is warmed up / driven for 10 minutes, There is no sound, no issue’s driving during this annoying sound. Only on cold driving no other time. Master tech. Checked transmission/gears & no issues. What can this be? Not a heat shield problem, all were replaced with new ones, lol another $700. Car has 270000km
but mostly highway driven. Well maintained at Mazda dealerships for the last 11 years. Any help or suggestions would appreciated, not throwing more money and parts at it. Thanks