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knoc sensor
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  1. FAQ/Common Questions
    2001 Xterra, 4wd, no SC Check Engine Light is on. Mechanic says codes are the ever present "knock engine light" along with "Evap canister purge volume valve". This is the 2nd time I've repaired each. Knock sensor in 2005 and EVAP valve in 2006. question #1) How often is this stuff supposed to...
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