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Keeps going in limp mode, overboosting. Have replaced waste gate actuator and solinoid,had turbo out and cleaned waste gate vanes and lubricated. worked fine for about 4 days.
2000 Jetta TDI
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Make sure to also check the vacuum ports on all the other items along the vacuum lines. You didn't say that you replaced the vacuum lines, it's possible there is some built up oil crud in them. It's also possible the turbo vanes are still sticking somehow.
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