I think I need a new one because I was told it had something to do with the timing but another guy said it was a knock sensor and you can't do anything with it. I was looking at some pics of a modified 2.3 and the same part was an after market part on that 2.3.

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1994 Mazda B2300 2.3L, throttle body spacer, intake muffler delete, no cat, 3.73 gears