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Check engine codes, should these be addressed?


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Not performance related, as least as far as I could tell.

Knock sensor, two misfire codes, MAF sensor and cat converter.  I changed the plugs. Would changing out the MAF, knock sensor or coil as recommended make any difference in mileage, etc.?

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It may depend on how the knock sensor has failed but, they CAN detrimentally affect performance by causing the car to over-retard timing.

 

many people have found cracks in the knock sensor and had good luck with $15 or w'ever replacements. pay attention to which direction the cable 'points', remove old sensor, clean underneath , bolt new one on, don't overtorque it, plug it in.

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