Clearing Continuous Memory Codes

1987 Mercury Lynx L, MTXIIISECTION Clearing Continuous Memory Codes

Perform KEY ON/ENGINE OFF (KOEO) SELF-TEST  . When the first service code appears, exit SELF-TEST by disconnecting diagnostic tester or by removing jumper wire from Self-Test Input (STI) pigtail. Exiting QUICK TEST  in this manner will clear all codes stored in continuous memory.

RENDER: 1.0x

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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.