Wrangler 4WD L4-150 2.5L VIN P MFI (1998)
Radiator Pressure Cap
WARNING: THE WARNING WORDS (DO NOT OPEN HOT) ON THE RADIATOR PRESSURE CAP ARE A SAFETY PRECAUTION.
WHEN HOT, PRESSURE BUILDS UP IN COOLING SYSTEM. TO PREVENT SCALDING OR INJURY, THE RADIATOR CAP
SHOULD NOT BE REMOVED WHILE THE SYSTEM IS HOT AND/OR UNDER PRESSURE.
There is no need to remove the radiator cap except for the following purposes:
1. To check and adjust antifreeze freeze point.
2. To refill system with new antifreeze.
3. For conducting service procedures.
4. When checking for vacuum leaks.
WARNING: IF VEHICLE HAS BEEN RUN RECENTLY, WAIT AT LEAST 15 MINUTES BEFORE REMOVING RADIATOR CAP.
WITH A RAG, SQUEEZE RADIATOR UPPER HOSE TO CHECK IF SYSTEM IS UNDER PRESSURE. PLACE A RAG OVER THE
CAP AND WITHOUT PUSHING DOWN, ROTATE CAP COUNTER-CLOCKWISE TO THE FIRST STOP. ALLOW FLUID TO
ESCAPE THROUGH OVERFLOW HOSE INTO COOLANT RESERVE OVERFLOW TANK. SQUEEZE RADIATOR UPPER HOSE TO
DETERMINE WHEN PRESSURE HAS BEEN RELEASED. WHEN COOLANT AND STEAM STOP BEING PUSHED INTO TANK AND
SYSTEM PRESSURE DROPS, REMOVE RADIATOR CAP COMPLETELY.
