BMW Coupes and Sedans 1970-1988 Repair Guide

Coolant Temperature Sensor

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REMOVAL & INSTALLATION



All Models

Disconnect the electrical terminal plug and unscrew the coolant temperature sensor.

TESTING



Except 3.0Si Models

The coolant temperature sensor can be checked with a test lamp. The circuit should open at temperatures above 113°F (45°C) and closed below 113°F (45°C).

3.0Si Models

The desired resistance is noted in the following chart, depending on the temperature reading.

 
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