Volvo 760GLE. 1985. Oil warning light

Discussion in 'Volvo 760' started by sable, Feb 11, 2004.

  1. sable

    sable Guest

    The light comes on intermittently. There is plenty of oil. Could it be that with a car this old, it is the sender or sensor, rather than something more serious?
    sable, Feb 11, 2004
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  2. sable

    Mike F Guest

    The senders on that engine are notorious for failing. It's a really
    dumb design that allows a certain amount of oil past a spring loaded
    plunger. Also this bypassed oil has to be able to drain back into the
    oil pan freely.

    Mike F.
    Thornhill (near Toronto), Ont.

    NOTE: new address!!
    Replace tt with t (twice!) and remove parentheses to email me directly.
    (But I check the newsgroup more often than this email address.)
    Mike F, Feb 11, 2004
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  3. sable

    MadNurseGaz Guest

    How many miles? When does the light come on? At idle? on the overrun? at
    high revs?
    It *could* be the sender/sensor, could just be general wear, tell us
    more details as above, it may help diagnosis. If it comes on at idle on
    a hot engine on a car that has covered a zillion miles, don't worry, the
    oil pump is tired, just as you would expect on such a car. If it comes
    on at any other time you need to investigate quickly!
    MadNurseGaz, Feb 11, 2004
  4. sable

    Boris Mohar Guest

    Sometimes the biodegradable insulation from the sender unit falls off,
    allowing the sender wire to get grounded intermittently. This will flicker
    your oil light.


    Boris Mohar

    Got Knock? - see:
    Viatrack Printed Circuit Designs
    Boris Mohar, Feb 11, 2004
  5. sable

    Rod Gray Guest

    Check the wire at the sending unit. The insulation cracks and falls off
    causing it to short to the alternator.

    that with a car this old, it is the sender or sensor, rather than something
    more serious?
    Rod Gray, Feb 12, 2004
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