Engine Controls - Crankshaft Sensor R&R Guidelines
89cadillac07Bulletin No. T-89-111
File in Group 6D
Number 41
Corp. Ref. No. 936509
Date May, 1989
SUBJECT: CRANKSHAFT SENSOR REPLACEMENT
MODELS AFFECTED: 1988 CIMARRONS
This bulletin describes diagnosis guidelines for the crankshaft sensor.
1. Oil in the Sensor
The sensor should be replaced only if diagnosis procedures from the Service Manual or CAMS indicates that the sensor is faulty. Do not replace the crankshaft sensor because oil is found in the sensor. Oil in the crankshaft sensor will not cause an operational condition.
2. Oil Leak Through the Sensor
The sensor should be replaced if an external engine oil leak through the sensor is the complaint condition.
3. Intermittent Sensor Connection
The most likely cause for a crankshaft sensor related performance condition is an intermittent connection to the sensor. Replacing the crankshaft sensor may repair the condition for a period of time; however, the vehicle could return with the same customer complaint at a later date. Therefore, prior to replacing a sensor check the wire harness connector to the crankshaft sensor for proper contact. The wire terminals or the connector body itself may be replaced if necessary.