Tacoma Extra Cab 2WD V6-3.4L (5VZ-FE) (1998)
Radiator Cap: Testing and Inspection
1. REMOVE RADIATOR CAP
CAUTION: To avoid the danger of being burned, do not remove it while the engine and radiator are still hot, as fluid and steam can be out under
pressure.
2. INSPECT RADIATOR CAP
NOTICE: If the radiator cap has contaminations, always rinse it with water.
Using a radiator cap tester, pump the tester and measure the relief valve opening pressure.
Standard opening pressure: 74 - 103 kPa (10.7 - 14.9 psi)
Minimum opening pressure: 59 kPa (8.5 psi)
HINT: Use the tester's maximum reading as the opening pressure.
If the opening pressure is less than the minimum, replace the radiator cap.
3. REINSTALL RADIATOR CAP