Vehicle make/model = oldsmobile aurora
Year = 1998
Mileage = 144000
Engine size = 4.0
dash lights = no
codes = no
work done prior = replaced cracked radiator
work done to repair = replaced radiator,thermostat,water pump,reservior
cap, and flushed system.
tech = kk
question = ever since i replaced everthing above the car still
overheats.when the car is running hot the coolant runs out of the reservoir
tank.at times when hot cold air blows out of the vents before turning
hot.if been told that it is possibly a bad guage or bad head. please help






KK:
As long as there are no air pockets from the above repairs from not properly bleeding the system then
these conditions, along with the repairs already made, do make me think you have headgasket problems.
This engine was know for having headgasket problems causing overheating, and blowing cold air when
heater on. Sometimes the gasket forces compression gasses into the cooling system, causing air pockets.
The air pockets cause the boiling over, and the no heater from heater.
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