Suba9792 Posted November 24, 2010 Share Posted November 24, 2010 My buddy has a 98 lego 2.2, he is having similar trouble with his car as I am, can the knock sensor go bad without throwing a code, or start failing without the code? Quote Link to comment Share on other sites More sharing options...
zacyork Posted November 24, 2010 Share Posted November 24, 2010 its always possible for it to go out and not throw a code. it should tho. if its bad your timing will be retarted i think 8 degrees. that is one way to check. Quote Link to comment Share on other sites More sharing options...
johnceggleston Posted November 24, 2010 Share Posted November 24, 2010 they can and will go bad but they will eventually throw a code, mine did. but it really isn't worth driving around for 2 years with crappy power and gas mileage? waiting for it to code. o2 sensors are the same way, i think. how many miles? over 125? and i think you are due. it's a 50 - 60$ part that lasted 125k miles. it has done it's job, time to get a new one. Quote Link to comment Share on other sites More sharing options...
idosubaru Posted November 24, 2010 Share Posted November 24, 2010 yes it's possible. doesnt' make any sense but i've seen parts cause driving issues but no CEL. i'd troubleshoot/diagnose here or with someone who's good at this stuff first before just guessing though. all sorts of things can have similar symptoms. Quote Link to comment Share on other sites More sharing options...
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