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What does it mean when you turn the key to the on position and the oil light comes on in your 2002 Jeep Liberty It goes away when you turn the ignition and start the car up?
Wiki User
∙ 17y ago
The oil pressure indicator is just that. It shows that oil PRESSURE inside the oil journals of the engine is up to the proper level. The oil is pressurized with a mechanical pump, and the oil is pumped through the engine. The pressure is necessary to keep bearings, hydraulic lifters and sometimes timing chain adjusters functioning properly. When the engine is not physically turning, there will be no oil pressure because the pump is not running, so it's perfectly normal and expected that there is no oil pressure when you first turn on the key. Or, in layman's terms, it means your "Oil" light is still working and your Jeep has enough oil in it.....
Wiki User
∙ 17y ago
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