i have a 2.4 chevy cavalier 96 it crank but it doesnot run it give me backfires i remove i put a scanner and and it trow the codes p1336 i think is kranckshaft sensor variation not learned is that means that the sensor is faulty or that the sensor is not learning the variation because the krankshaft is not turning? i check coils with a multimeter and is rearing good Thanks
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