Knock Sensor (Bronco II & Ranger 2.9L)
Locate sensor and remove harness connector. Using ohmmeter, measure resistance across sensor terminals. Resistance should be 4.5-6.5 k/ohms. If resistance is not within specification, replace knock sensor.
Locate sensor and remove harness connector. Using ohmmeter, measure resistance across sensor terminals. Resistance should be 4.5-6.5 k/ohms. If resistance is not within specification, replace knock sensor.