1978 Plymouth Arrow Base, Automatic TransFACTORY OEM SERVICE PROCEDURE

Spark Control Computer

The Spark Control Computer (SCC) is the heart of the ELB system. It gives the ELB system the capability of igniting a lean air/fuel mixture according to different modes of engine operation by delivering an infinite amount of variable advance curves. There are 2 different computers depending upon application.

The computer determines the exact instant when ignition is required, then feeds the ignition coil to produce electrical impulses which fire the spark plugs. The computer receives signals from several sensors and instantly makes any necessary correction to engine advance or retard to maintain maximum efficiency.

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.