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Home >> Buick >> 1987 >> Electra Limited >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Panel - Standard >> Testing & Diagnosis >> Temperature Gauge (Open Test)

Temperature Gauge (Open Test)

  1. Disconnect the coolant temperature sender/switch. Ground Dark Green/Yellow wire at coolant temperature sender/switch connector.
  2. If gauge reads hot, check Dark Green/White and Dark Green/Yellow wires for an open. Replace coolant temperature gauge if wires are good.