Question about 1993 Jeep Grand Cherokee

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Oil pressure goes from around 25 at idle and almost 50 sometimes

Engine idles a little low aroun 800 rpms. I flushed engine with gunk and presure is the same.

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  • yadayada
    yadayada May 11, 2010

    Change the sending unit, but 800 RPM is not a low idle, and 25 PSI is not low oil pressure at idle, is this some kind of test?

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There could be several reasons for this either the sending unit is faulty( the pressure should always rise with engine rpms) or you have a bad connection to the sending unit. Unless you have a severe upper engine noise I doubt that it is an oil pump problem.. please rate

Posted on Dec 04, 2008

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