Quote:
Originally Posted by hz_diesel
Mine also comes on randomly... Usually once a day and then after I clear it, no issues. Can usually go WOT and full boost but at highway speeds and a quick over 3k for lane switch I'll get the 2c57 code and half engine light. Might just try the pneumatic wastegate actuator, is there any specific way to diag it? or just replace and pray.
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Honestly if you never replaced your pneumatic actuator then try. Because it's made from plastic and cracks easily. My boost leak got worse by time because it was the crack getting bigger and bigger. A new one fixed my leak. But a couple of months later it was a crack in my valve cover. After a new VC I was all ready to go!!