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Oil Pressure Gauge Testing - (G, P, R & V Series)

  1. Disconnect oil pressure gauge sender wire and connect Gauge Tester (J-24538-A) between sender wire and ground. Turn ignition on. If gauge responds to tester accurately, replace sender. If gauge does not respond, go to next step. If gauge does respond, but not accurately, go to step  4.
  2. Disconnect oil pressure gauge lead at engine/firewall harness connector. Connect tester to terminal No. 31 (Tan wire) of firewall connector. If gauge responds to tester accurately, check wiring between sender connector and engine/firewall harness connector. If gauge does not respond, go to next step.
  3. Remove gauge. Check for bad connections at gauge terminals or instrument cluster connector. If connections are good, replace gauge. If bad, repair connections and install gauge.
  4. Remove gauge and check for loose nuts at gauge terminals. If nuts are loose and gauge reads slightly below mid-scale with 90 ohms from tester, tighten nuts and install gauge. If gauge is still inaccurate and nuts are tight, replace gauge.
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