Automotive Systems

Formerly Automotive Systems I

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Cooling System Tests: Introduction


It is often necessary to check the cooling system for cooling system problems. Cooling system problems can be grouped into three general categories:

  1. COOLANT LEAKS—crack or rupture, allowing pressure cap action to push coolant out of the system.
  2. OVERHEATING—engine operating temperature too high, warning light on, temperature gauge shows hot, or coolant and steam is blowing out the overflow.
  3. OVERCOOLING—engine fails to reach full operating temperature, engine performance poor or sluggish.

To diagnose and repair cooling system problems, perform several tests. These tests include the following—cooling system pressure test, combustion leak test, thermostat test, engine fan test, and fan belt test.

Published by SweetHaven Publishing Services
Based upon a text provided by the U.S. Navy

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