1985 American Motors Encore BaseFACTORY OEM SERVICE PROCEDURE

1.4L TBI System: Description

The computerized engine control system used on Federal Alliance and Encore models with throttle body fuel injection is built around a microprocessor based computer. The major task of this system is to reduce emissions by controlling air/fuel ratio, ignition, idle speed and emission control devices. In order to carry out this task it is necessary to monitor several engine conditions.

These engine conditions are monitored by a system of sensors that input information to the computer. The computer processes this information to get an accurate picture of engine operation. The computer is then able to control the engine for optimum performance and minimum emissions.

Fig 1: 1.4L TBI Engine Control System Component Locations This illustration is not to scale.
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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.