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Symptom: *CHECKING MINIMUM AIRFLOW APPLICABILITY START AT TEST 4.0L MPI I-6 1 4.7L ENGINE(EVA)/4SPD A/T 45RFE(DG4) 2 POSSIBLE CAUSES CHECKING THE MINIMUM AIRFLOW THROTTLE PLATE/LINKAGE BINDING VACUUM LEAK THROTTLE BODY THROTTLE BODY DIRTY TEST ACTION APPLICABILITY 1 Start engine and bring to operating temperature. Be sure all accessories are off t. Start the Engine. t, run the Minimum Air Flow test. The DRBIII t will count down to stabilize the idle rpm and display the minimum air flow idle rpm. The idle rpm should be between 500 and 900 rpm. If the idle speed is 4.0L MPI I-6 Yes → Test Complete. No → Replace the throttle body. 249 DRIVEABILITY - GAS |