Wrangler L6-4.0L VIN S (2000)
Engine Block Heater: Service and Repair
REMOVAL
WARNING: DO NOT REMOVE THE CYLINDER BLOCK DRAIN PLUGS OR LOOSEN THE RADIATOR DRAINCOCK WITH THE
SYSTEM HOT AND PRESSURIZED. SERIOUS BURNS FROM THE COOLANT CAN OCCUR.
DO NOT WASTE reusable coolant. If solution is clean, drain coolant into a clean container for reuse.
1. Drain coolant from radiator and engine cylinder block.
2. Unplug power cord from block heater.
Fig. 34
Fig. 35
3. Loosen screw in center of block heater (Fig. 34) or (Fig. 35)