Question about Jeep Wrangler

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My oil pressure gauge has recently been spiking off the scale in my 1995 wrangler upon acceleration while warming up. takes about 20 minuets of drive time for it to plane back out to normal range around 45 psi, but will still spike under strain. I changed the oil and filter seemed to amplify the problem. I'm Having alittle trouble deciding what to do next . replace the oil pressure sensor which I replaced when I did a head gasket about six months ago.or, drop the pan and check the sump.any Any advice you could offer would be greatly appreciated. Red

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  • rabidrave Apr 10, 2011

    In the event that the screen for the sump is clear what would be the next logical step? A failing oil pump would cause a drop in pressure so that is not likely, correct?

  • rabidrave Apr 10, 2011

    Would it be likely that a clogged sump would cause jumps in pressure?

  • rabidrave Apr 10, 2011

    If I don't have the opportunity to do the sump check till the weekend but have to drive it one way 20 mins to work what risk do I run it has not been over heating at all and usually plains out half way there.
    think I'll make it?

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  • Jeep Master
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It can be issue with the pump if the oil filter is changed and oil level is proper and oil is replaced. They have springs in them to keep them from doing this kind of thing. Since yours stays then jumps, it could be a broken spring in the pump moving around and sticking in different spots. Make sure the passageways between the pump and pressure relief valve are not blocked.But if pump checked out ok, then it can be oil pressure switch. Oil pressure switch short , it is located on the passenger side on the back of the engine block. If the is oil is seen on the switch replace it 99.9% of the time this is the problem.---------- This should help.Thanks.Helpmech.

Posted on Apr 11, 2011

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  • Master
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Drop the oil pan and check the oil sump first time! If you had replaced the oil pressure sensor six months ago, I don't think that it could be bad.

Posted on Apr 10, 2011

  • TDISLine
    TDISLine Apr 10, 2011

    Check the oil sump strainer, then the oil pump by-pass valve. This by-pass valve can be bad. The last component out of order will be the oil pump. Repair & replace if necessary. A failing oil pump would cause a drop in oil pressure. That's correct.

  • TDISLine
    TDISLine Apr 10, 2011

    Yes, a clogged oil sump would cause jumps in oil pressure.

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