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Oil Pressure Always Indicates High

  1. With engine running, compare oil pressure with oil pressure gauge reading. If readings are reasonably accurate, gauge is operating properly. Check engine. If readings are not reasonably accurate. go to next step.
  2. Disconnect oil pressure sender harness connector. Connect a fused jumper wire between ground and Tan wire terminal at oil pressure sender harness connector. Oil pressure gauge should indicate 0 psi. If indicator indicates 0 psi, replace oil pressure sender. If indicator indicates high oil pressure, go to next step.
  3. Disconnect instrument cluster harness connector. Connect a self-powered test light between instrument cluster harness connector terminal B8 (Tan wire) and oil pressure sender Tan wire terminal. If test light lights, replace instrument cluster. See INSTRUMENT CLUSTER  under REMOVAL & INSTALLATION. If test light does not light, repair open in Tan wire.
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