Question about 1992 Mazda MX-3
Actually the knock sensor has nothing to do with the idler
but yes you are right the code # 5 means knock sensor problem
most of times knock sensor is located on either side of engine block but if you don't know how it looks like just buy a new sensor and compair it with the one on your car, if you are planing to instal new sensor is ok but if codes keeps coming on then it migh be the circuit from sensor to computer or the computer it self, but again i don't belive it has nothing to do with idle problem. hope and this help
Posted on Jun 05, 2008
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Posted on Jan 02, 2017
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Please see my tip at http://www.fixya.com/cars/r5932051-check_engine_light_check. These are generic instructions. If you get stuck or need specific instructions for your car, please get back to me with model, year and engine info.
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