1979 Fiat Strada Base, 2D Hatchback, Automatic TransFACTORY OEM SERVICE PROCEDURE

EGR System

At 25, 000 mile intervals, a catalyst/EGR system light comes on. After servicing EGR system, reset maintenance reminder light. Locate odometer switch in engine compartment. SeeΒ Fig 1. Remove lock wire, unscrew cap and turn screw to "50". After 50, 000 miles, turn screw back to "25".

Fig 1: Catalyst/EGR System Odometer Switch
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Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.