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Oil Pressure Light - slow to switch off 200 1989

posted by  CoolVolvo on  Thu Aug 27 11:19 CST 2015
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last visit: Tue Jul 29 10:53 CST 2014
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Lately, I noticed that the Oil Pressure Light takes a while longer (>5 sec)
to turn off after starting the engine. Should I worry about the oil pump or could it just be an old sensor taking its time?
--
-Cool Volvo- 1989 240 5 Spd w/ 310K, 1989 240 5 Spd w/ 231k. Past proud owner of 1966 122, 1968 144, 1970 145, 1972 144, 1980 245, 1982 240 4 Spd OD








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    could also be an anti-drain seal in the filter ... 200 1989

    posted by  Ken C on  Thu Aug 27 23:40 CST 2015
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    last visit: Fri Oct 24 11:39 CST 2014
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    The proper(!) oil filter has an anti-drain valve to keep the filter filled with oil -- i.e., so it doesn't empty during periods when the engine is off.

    If the filter is empty, that ~5 sec interval is about the time it takes for it to fill when you start the engine (just like when you put in a new filter at oil change times if you don't do what I do and prefill the filter partially -- just enough so it doesn't spill oil when you spin the filter onto the engine).

    So if you didn't have this problem earlier, then maybe the filter needs to be replaced. It's an easy thing to test -- just change the filter!







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      could also be an anti-drain seal in the filter ... 200 1989

      posted by  CoolVolvo on  Fri Aug 28 17:09 CST 2015
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      So, I changed the oil filter...
      When I start the engine the oil light stays on for 30 secs at normal idle speed. Once I rev it up, the light disappears in a couple of secs.
      I'm still suspicious of the oil pump.
      --
      -Cool Volvo- 1989 240 5 Spd w/ 310K, 1989 240 5 Spd w/ 231k. Past proud owner of 1966 122, 1968 144, 1970 145, 1972 144, 1980 245, 1982 240 4 Spd OD








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        could also be an anti-drain seal in the filter ... 200 1989

        posted by  Ken C on  Fri Aug 28 17:17 CST 2015
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        last visit: Fri Oct 24 11:39 CST 2014
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        Sorry the filter change didn't work.

        Following the protocol of doing the easier/less costly things first, before changing the oil pump (a horror to do unless you pull the whole engine), the next thing to try is the pressure sender. You can put in a gauge in its place, but easier (unless you have a gauge handy) is to just get a replacement sender (and keep your fingers crossed :-).

        Good luck.







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        could also be an anti-drain seal in the filter ... 200 1989

        uid 27's pic
        posted by  Art Benstein on  Fri Aug 28 17:15 CST 2015
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        last visit: Fri Oct 17 20:10 CST 2014
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        To be sure, you need to do as trichard said; connect a gauge. But understand you are possibly fighting a very common problem with the oil delivery pipe (not a pump or bearings) where the O-ring pops out.

        http://cleanflametrap.com/oilpan/
        --
        Art Benstein near Baltimore

        'There's a way of transferring funds that is even faster than electronic banking. It's called marriage.'
        -Sam Kinison








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      could also be an anti-drain seal in the filter ... 200 1989

      posted by  CoolVolvo on  Fri Aug 28 05:49 CST 2015
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      Thank you Ken.
      I'll certainly go ahead and change the filter.
      --
      -Cool Volvo- 1989 240 5 Spd w/ 310K, 1989 240 5 Spd w/ 231k. Past proud owner of 1966 122, 1968 144, 1970 145, 1972 144, 1980 245, 1982 240 4 Spd OD







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