Agree with John, that tone ring on the flywheel must be positioned just right for optimal operation. Look carefully at the tone ring ( black plastic cage looking device on the flywheel ) for any damage, or melted plastic. Installation tips as John mentioned above. Also note if there’s two set screws. If two are present, use them to adjust any wobble in the wheel. Try to get it to spin as true as possible ……watching to be sure the tone ring doesn’t scrub against the sensor,…..
Pat