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Home >> Oldsmobile >> 1996 >> Eighty-Eight LS >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Panel - Analog >> Testing >> Fuel Gauge Test >> Base Cluster (Eighty Eight)

Base Cluster (Eighty Eight)

  1. Turn ignition switch to OFF position. Disconnect fuel gauge sender connector. Connect 2 Red leads of Gauge Tester (J 33431) to fuel gauge sender connector terminals "B" (Purple wire) and "D" (Black wire). Turn ignition switch to RUN position.
  2. Set resistance dials on tester to zero ohms (Empty), then to 90 ohms (Full). If fuel gauge fluctuates from empty to full, check resistance between fuel level sensor connector terminals "B" and "D". If zero-90 ohms are present, check connector terminals for poor terminal contact. If zero-90 ohms are not present, replace fuel sender.
  3. If fuel gauge does not fluctuate from empty to full, turn ignition off. Disconnect instrument cluster connector. Connect ohmmeter between cluster connector terminals D16 and D9.
  4. Disconnect tester. Disconnect instrument cluster connector. Connect test light between cluster connector Purple wire terminal D16 and battery voltage. If test light lights, check Purple wire for a short to ground.
  5. If test light does not light, leave test light connected and connect jumper wire between fuel gauge sender connector terminal "B" (Purple wire) and ground. If test light does not light, check Purple wire for an open circuit.
  6. If test light lights, connect test light between fuel gauge sender connector terminal "D" (Black wire) and voltage. If test light lights, check Black wire for an open circuit. If test light does not light, check for good terminal contact at instrument cluster connector. If terminal contact is okay, replace instrument cluster.
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