I drive a 2004 WRX that's developed a chatter above 3,000 rpm. Sounds vaguely like valve clatter, but is very muted, and only audible under throttle. Since the turbo is spooling up and engaging right around
3,000, should I suspect a turbo problem, maybe a relief valve that's opening when it shouldn't? Car is under extended Subaru factory warranty and going back to the dealer next week. No other problem, just curious as to what this might be so I can counter any BS the service dept. might give me.- posted
15 years ago