LEMON Manuals: Even more car manuals for everyone
Home >> GMC >> 1992 >> Forward Control 5.7 K, Standard >> Repair and Diagnosis (Single Page) >> Electrical >> Gauges >> Instrument Panel >> Testing >> Oil Pressure Gauge (Van) >> Oil Pressure Gauge Inoperative Or Inaccurate

Oil Pressure Gauge Inoperative Or Inaccurate

  1. Disconnect oil pressure sender. Connect Gauge Tester (J24538-A) to sender wire and ground. Turn ignition on. If gauge responds okay, replace oil pressure sender.
  2. If gauge does not respond correctly, disconnect engine harness connector. Connect Gauge Tester (J24538-A) to oil pressure gauge wire in engine harness connector.
  3. With gauge tester set at 90 ohms, oil pressure gauge should read slightly below mid-scale. If reading is correct, check wiring to oil pressure sender for loose connections and chaffed insulation. Repair as necessary. If reading is incorrect, remove oil pressure gauge and check for loose terminal nuts.
  4. Tighten nuts as necessary. If gauge connections are tight, replace gauge. If gauge does not respond to 90 ohm application, disconnect engine harness connector. Connect Gauge Tester (J24538-A) to oil pressure gauge wire in engine harness connector.
  5. If gauge responds okay, check wiring between oil sender and engine harness connector. Repair as necessary. If gauge does not respond, remove gauge and check for loose or open connections at gauge terminals.
  6. Check for loose instrument cluster connector. Repair connections as necessary. If connections are okay, replace oil pressure gauge.
scientia non olet · About LEMON Manuals