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Service Data

WARNING: This page is about a different car, the 2005 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.

1GF-FE: 

Service Data - Cooling (1GF-FE)

Water inlet w/ thermostat    
Valve opening temperature   80 -- 84°C (176 -- 183°F)
Valve lift at 95°C (203°F) 8 mm (0.31 in.) or more
Radiator cap    
Relief valve opening pressure Standard 93 -- 123 kPa (0.95 -- 1.25 kgf/cm2 , 13.5 -- 17.8 psi)
  Minimum 78 kPa (0.8 kgf/cm2 , 11.4 psi)

2UZ-FE: 

Service Data - Cooling (2UZ-FE)

Thermostat    
Valve opening temperature   80 -- 84°C (176 -- 183°F)
Valve lift at 95°C (203°F) 10 mm (0.39 in.) or more
Radiator cap    
Relief valve opening pressure Standard 93 -- 123 kPa (0.95 -- 1.25 kgf/cm2 , 13.5 -- 17.8 psi)
  Minimum 78 kPa (0.8 kgf/cm2 , 11.4 psi)