SRGAbe Posted November 4, 2004 Share Posted November 4, 2004 Folks, About three months ago, my check engine light came on and the dealer diagnosed it as the knock-sensor problem and replaced it. Since then, my gas-mileage has dropped noticeably. It was not great to start with (on hi-test!). It has gone down from about 20 mpg to about 15.4. Naturally I am reluctant to go back to dealer for another $75 on diagnosing this if there is something I can do myself. Any suggestions? Sam Quote Link to comment Share on other sites More sharing options...
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