Silhouette V6-191 3.1L (1990)
Coolant Temperature Sensor/Switch (For Computer): All Technical Service Bulletins
Temperature Gauge - Overheat Condition Indicated
NUMBER:
91-T-105
CORP.REF.NO: 138107
DATE:
April 1991
SECTION:
8A
SUBJECT:
INDICATED OVERHEAT CONDITION (REPLACE SENSOR)
MODELS/YEARS:
1990-91 SILHOUETTE
CONDITION:
The engine temperature gage may read high (into the red zone) under normal driving conditions.
CAUSE:
An improper material in the tip of the temperature sensor can cause the temperature gage to read too high. The sensor was changed in production with
vehicle number MT305067.
CORRECTION:
Verify that the engine does not have a true overheat condition by comparing the temperature reading of the ECM coolant sensor (measured with a SCAN
tool) to the gage reading. If the ECM sensor reads normal at the same time the temperature gage reads high, replace the temperature gage sending unit
with P/N 10200490.
WARRANTY INFORMATION:
Use labor operation number N2230 with the current posted time and trouble code 92.
