Jeep Wrangler Problem Report
Jeep Wrangler Revised speed sensor will solve internal leaks in sensor/adapter
Internal leaks in the speed sensor or speed sensor gear adapter (speedometer adapter) are common. A revised speed sensor (white in color, old versions are black), used in production since November of 1993, solves the problem. If leaks develop between the sensor and the adapter or between the adapter and the transmission housing (transfer case if 4WD), a revised speedometer adapter is available.