GM Metro/Sprint 1985-1993 Repair Guide

Thermostat

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REMOVAL and INSTALLATION

See Figure 1



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Fig. Fig. 1: Thermostat air bleed valve

  1. Disconnect the battery negative cable.
  2.  
  3. Drain cooling system to a level below the thermostat.
  4.  
  5. Remove the air cleaner.
  6.  
  7. Disconnect the electrical connectors at the thermostat cap.
  8.  
  9. Remove the inlet hose, cap mounting bolts and the thermostat from the thermostat housing.
  10.  
  11. Clean the gasket mounting surfaces. Ensure that the thermostat air bleed hose is clear.
  12.  

To install:
  1. Install thermostat into housing with the spring side down.
  2.  
  3. Install the thermostat housing using a new gasket. Tighten bolts to 15 ft. lbs.. (20 Nm).
  4.  
  5. Install the inlet hose and tighten clap securely.
  6.  
  7. Fill cooling system.
  8.  
  9. Connect the battery negative cable. Start engine and check for leaks.
  10.  

 
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