Dakota 2WD V8-4.7L VIN J (2005)
Radiator: Testing and Inspection
RADIATOR COOLANT FLOW
Use the following procedure to determine if coolant is flowing through cooling system.
1. Idle engine until operating temperature is reached. If upper radiator hose is warm to the touch, thermostat is opening and coolant is flowing to
radiator.
WARNING: HOT, PRESSURIZED COOLANT CAN CAUSE INJURY BY SCALDING. USING A RAG TO COVER RADIATOR
PRESSURE CAP, OPEN RADIATOR CAP SLOWLY TO FIRST STOP. ALLOW ANY BUILT-UP PRESSURE TO VENT TO THE
RESERVE/OVERFLOW TANK. AFTER PRESSURE BUILD-UP HAS BEEN RELEASED, REMOVE CAP FROM FILLER NECK.
2. Drain a small amount of coolant from radiator until ends of radiator tubes are visible through filler neck. Idle engine at normal operating
temperature. If coolant is flowing past exposed tubes, coolant is circulating.
