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Instantaneous Fuel Economy Always Reads: "0" Miles/Gallon Or "99" Liters/100 Km

  1. Verify that speedometer is operating properly. If okay, go to next step. If not, perform SPEEDOMETER READS "0" MPH WHEN VEHICLE IS IN MOTION test.
  2. Remove instrument cluster. Check continuity between pin "10C" of speedometer and pin "18A" of fuel computer. See Instrument Cluster Pin Connector Identification. If okay, replace fuel computer module. If not, repair wiring in circuit as required.
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