LEMON Manuals: Even more car manuals for everyone
Home >> Pontiac >> 2000 >> Firebird Base, 2D Convertible, Automatic >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Analog Instrument Panels >> System Tests >> Oil Pressure Gauge Tests >> Oil Pressure Gauge Inaccurate Or Inoperative

Oil Pressure Gauge Inaccurate Or Inoperative

  1. If diagnostic system check has been performed, go to next step. If diagnostic system check has not been performed, perform INSTRUMENT CLUSTER DIAGNOSTIC SYSTEM CHECK  under SELF-DIAGNOSTIC SYSTEM.
  2. Start engine and observe oil pressure gauge. If oil pressure gauge does not indicate an acceptable level, go to next step. If oil pressure gauge indicates an acceptable level, problem may be intermittent. Try to recreate fault by wiggling wiring and connectors. Check for faulty connections at all connectors that may be causing intermittent condition. See WIRING DIAGRAMS  .
  3. If oil pressure gauge always indicates low pressure, go to OIL PRESSURE GAUGE ALWAYS READS LOW  . If oil pressure gauge does not always indicate low pressure, go to next step.
  4. Disconnect oil pressure sensor connector. Using Instrument Cluster Tester (J-33431), connect one Red lead to Tan wire at oil pressure sensor connector. Connect remaining Red lead of instrument cluster tester to ground. Turn ignition on. Observe oil pressure gauge and set resistance on instrument cluster tester to 40 ohms, then to 100 ohms. Oil pressure gauge should move from low pressure to about 30 psi, then move to high pressure. If oil pressure gauge does not operate as specified, go to step  7 . If oil pressure gauge operates as specified, go to next step.
  5. Check for faulty connection at oil pressure sensor connector. Repair connector as necessary. Recheck system operation. If oil pressure sensor connector is okay, go to next step.
  6. Replace oil pressure sensor. Recheck system operation.
  7. Check for open or poor connection in Tan wire between engine oil pressure sensor and instrument cluster. Repair as necessary. Recheck system operation. If Tan wire is okay, go to next step.
  8. Replace instrument cluster. See INSTRUMENT CLUSTER  under REMOVAL & INSTALLATION. Check system operation.
scientia non olet · About LEMON Manuals