Question about 1990 Chevrolet S-10 Blazer

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The dash digital oil pressure display stays at zero when the engine is running, all RPM's. Verified that engine oil pressure is about 45 to 50 lbs at idle and that the oil pressure sender on engine is working (replaced). Removed electrical plug from top of oil pressure sender and oil pressure display goes to 100%. All other dash digital displays, speed, engine temp, tach are working OK.

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  • dpnemecek Jul 03, 2009

    Sorry took so long to answer, couldn't figure out how to do it.

    I actually installed two new oil pressure senders. One from AutoZone auto parts store and the other from NAPA auto parts store. No change in problem.

  • Donnie Matney
    Donnie Matney May 11, 2010

    just because you installed a new one, are you sure the sender is good?

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You may have a faulty sending unit

Posted on Jul 03, 2009

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