Marquis L4-140 2.3L VIN A 1-bbl (1986)
Engine Control Module: Service and Repair
The Electronic Control Assembly (ECA) stores information about vehicle operating conditions and uses this information to compensate for component
tolerances. When an emission related component is replaced, Keep Alive Memory (KAM) should be cleared to erase the information stored by the
processor from the original component.
To clear the KAM, disconnect the battery negative terminal for five minutes or more. Drive the the vehicle for at least ten miles to allow the ECA to
relearn the values for optimum performance.
NOTE: During the ten mile relearn drive, the vehicle may exhibit some driveability symptoms. These should be eliminated when the KAM has
relearned the operating values.
