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Home >> Mercury >> 1988 >> Tracer 2D Hatchback, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> MPFI System >> Diagnosis & Testing >> Preparation >> Notes

Diagnosis & Testing: Preparation: Notes

Correct results of the testing are dependent on the proper operation of related non-electronic components. It may be necessary to disconnect harness assemblies to perform some of the inspections. Pin locations should be noted before disassembly. If the engine will not start, starts but stalls, idles rough or runs rough, proceed to Key On Engine Off (KOEO) test.

NOTE: On vehicles built AFTER 11/2/87, proceed to SWITCH MONITOR  TEST (VEHICLES BUILT AFTER 11/2/87 ONLY) before servicing a code, on all others, proceed to EQUIPMENT HOOK-UP  .
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