Grand Cherokee 2WD Limited V8-4.7L (2002)
Engine Block Heater: Description and Operation
ENGINE BLOCK HEATER
DESCRIPTION-4.7L ENGINE
WARNING: DO NOT OPERATE ENGINE UNLESS BLOCK HEATER CORD HAS BEEN DISCONNECTED FROM POWER SOURCE
AND SECURED IN PLACE. THE POWER CORD MUST BE SECURED IN ITS RETAINING CLIPS AND ROUTED AWAY FROM
EXHAUST MANIFOLDS AND MOVING PARTS.
An optional engine block heater (Fig. 12) is available with all models. The heater is equipped with a power cord. The cord is attached to an engine
compartment component with tie-straps. The heater warms the engine providing easier engine starting and faster warm-up in low temperatures. The
heater is mounted in a core hole of the engine cylinder block in place of a freeze plug with the heating element immersed in engine coolant.
