Pressure Cap Testing 3.5L V6 LX5

Tools Required

Caution: Under pressure, the temperature of the solution in the radiator can be considerably higher, without boiling. Removing the radiator cap while the engine is hot (pressure is high), will cause the solution to boil instantaneously, with explosive force. The solution will spew out over the engine, fenders, and the person removing the cap. Serious bodily injury may result. Flammable antifreeze, such as alcohol, is not recommended for use at any time. Flammable antifreeze could cause a serious fire.

Caution: In order to help avoid being burned, do not remove the radiator cap while the engine and the radiator are hot. Scalding fluid and steam can be blown out under pressure if the cap is removed too soon.

1. After the system has cooled, remove the radiator/surge tank pressure cap.



2. Check the radiator/surge tank cap with the J 24460  -01 and the J 24460-92 in order to ensure the cap maintains the correct pressure.
3. Replace the radiator/surge tank pressure cap if it fails to maintain the correct pressure.

Pressure Cap Testing 3800 V6 L36

Tools Required

J 24460-01 Cooling System Tester

Caution: As long as there is pressure in the cooling system, the temperature can be considerably higher than the boiling temperature of the solution in the radiator without causing the solution to boil. Removal of the pressure cap while the engine is hot and pressure is high will cause the solution to boil instantaneously -- possibly with explosive force -- spewing the solution over the engine, fenders and the person removing the cap.

The vehicle is equipped with an aluminum radiator. Use the outlined instructions in the Aluminum Radiator Diagnosis section in order to remove the cap:

1. Remove the cap.
2. Wet the radiator cap gasket with water.
3. Wash off any sediment from the sealing surface.
4. Install the cap to the J 24460-01 .
5. Use the plunger handle of the J 24460-01 in order to increase the pressure as specified on the cap.
6. Note the rate of decrease in the pressure.
7. The specified reading of the pressure should remain within the corresponding pressure scale for more than 10 seconds.
8. Replace the radiator cap if it does not maintain the pressure for more than 10 seconds.