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Home >> Mercury >> 1988 >> Tracer 2D Hatchback, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> MPFI System >> Quick Test >> Engine Running Self-Test >> Performing Test

Performing Test

  1. If the symptom is a no-start, proceed to CONTINUOUS SELF TEST. Verify a pass Code 00 was received in the KOEO SELF-TEST before continuing.
  2. Deactivate self-test. Start and run engine at 2000 RPM for 5 minutes to warm up EGO sensor. Turn engine off and wait 10 seconds.
  3. Restart engine and activate self-test. Record all service codes displayed and proceed to KOEO & ENGINE RUNNING SELF-TEST CHART.

These codes are issued as a result of information stored during continuous self-test and are stored in permanent memory until they are erased. These codes are displayed only during KOEO testing. These codes should be used for diagnosis only when KOEO and ENGINE RUNNING SELF-TESTS result in Code 00 and all QUICK TEST steps have been successfully completed.

NOTE: Verify that a Pass Code 00 was received in both KOEO and ENGINE RUNNING SELF-TESTS before continuing with this test. Clear codes before continuing with test.
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