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Home >> Pontiac >> 1989 >> LeMans Base, Automatic >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Panel - Standard >> Testing >> Temperature Gauge >> Temperature Gauge Reads Cold With Engine Hot

Temperature Gauge Reads Cold With Engine Hot

  1. Disconnect coolant temperature sender connector. Using a jumper wire, connect gauge Gray/White wire to ground and turn ignition switch to "RUN" position.
  2. If gauge reads hot, replace sender. If gauge reads cold, check gauge Green/White and Gray/White wires, printed circuit and gauge connections for opens. If okay, replace gauge.