Engine Speed Sensor
Disconnect speed sensor connector from ignition control module. Measure resistance between terminal "A" and "B" (marked on connector). Resistance should be 125-275 ohms with engine hot. Replace sensor if not within specification.
Disconnect speed sensor connector from ignition control module. Measure resistance between terminal "A" and "B" (marked on connector). Resistance should be 125-275 ohms with engine hot. Replace sensor if not within specification.