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    Idling issues in my 1994 Holden Apollo

    Holden Holden Advice Holden Apollo Holden Apollo Advice Holden Apollo 1994

    1994 Holden Apollo idle is low when hot and oil light flickers on and off.

    Answered by CarsGuide
    7 April 2024
    David Morley

    Many engines lose rpm when they are sitting at a hot idle. The problem could be with the fuel or ignition systems, but could also be a stepper motor that either needs to be replaced or reset (to re-establish the correct idle speed).

    The oil light will be flickering because the sensor is telling the computer that there’s not enough oil pressure being generated to lubricate the engine properly. In turn, that’s because hot oil is thinner than thick oil (which means less oil pressure) and the amount of oil pressure generated is directly linked to how fast the engine is running. Hot (thin) oil plus a slow idle, means a dangerous fall in oil pressure.

    If the oil pressure light goes out when you rev the engine a little, it will probably be okay, but don’t drive it like that for too long. Once the idle speed is reset, the oil light should not flicker on again. If it does, change the engine oil to a thicker (higher viscosity) specification.

    Disclaimer: You acknowledge and agree that all answers are provided as a general guide only and should not be relied upon as bespoke advice. Carsguide is not liable for the accuracy of any information provided in the answers.
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