Radiator Cap Pressure Check

WARNING: This page is about a different car, the 2005 Dodge Stratus and 2005 Chrysler Sebring. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Be sure that the cap is clean before testing, since rust or other foreign material on the cap seal will cause an improper indication.

Use a cap adapter to attach the cap to the tester.
Increase the pressure until the indicator of the gauge stops moving.
Minimum limit: 83 kPa (12 psi)

Standard value: 93 - 123 kPa (14 - 18 psi)
Replace the radiator cap if the reading does not remain at or above the limit.

Fig 1: Checking Radiator Cap
Courtesy of DAIMLERCHRYSLER CORPORATION