Pre-Test Information

A malfunction in the EFC system may result in engine surge, hesitation, rough idle and/or poor fuel economy. Before performing any tests, check all vacuum hoses and electrical wiring for proper routing and connections and check for exhaust and intake manifold leaks. If these are in order, proceed with testing.

Fig 1: Location of Magnetic Pick-Up Assembly

Courtesy of CHRYSLER MOTORS.

Fig 2: Internal View of Spark Control Computer

Courtesy of CHRYSLER MOTORS.