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Home >> Ford >> 1990 >> Bronco II 4WD, Standard, M5OD-R1 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Test M - Dynamic Response Test >> Test M - Introduction >> Notes
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Test M - Introduction: Notes

NOTE: You should perform this test only when a Code 77 is received during QUICK TEST.
NOTE: To prevent replacement of good components, be aware that the following non-EEC related areas may be at fault:
NOTE: If throttle is snapped open briefly, it may not be sufficient to pass the WOT test. Ensure that the throttle is depressed fully to WOT and that engine exceeds 2000 RPM.