1983 Plymouth Horizon 2.2 C, StandardFACTORY OEM SERVICE PROCEDURE

Spark Control Computer R & I

NOTE: Do not remove grease from harness connectors or connector cavities in the computer. The grease is used in order to prevent moisture from corroding the terminals. If there is not at least 1/2" of grease on bottom of computer connector cavities, apply a liberal amount of Mopar multi-purpose grease No. 2932524 (or equivalent) over entire end of connector plug before reinstalling.
  1. Remove battery. Disconnect 10-wire and 6-wire connectors from computer. Remove outside air duct from computer. Disconnect vacuum hose from vacuum transducer.
  2. Remove 3 mounting screws that hold computer to fenderwell and remove computer. To install, reverse removal procedure.
NOTE: Computer is not serviceable. Do not attempt disassembly for any reason. If vacuum transducer is defective, entire computer must be replaced.
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:

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

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