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throttle body
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  1. Engine - 4.6L & 5.4L
    I couldn’t find any write-ups on rebuilding/replacing the shaft seals on our throttle bodies so, I figured I’d pass on what I found. There is a rubber o-ring on the shaft under the bearing at each end of the shaft. On mine, both o-rings were hard and the one closest to the return spring was...
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