Engine Stalls or Idles Rough

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Check the following:

1. Vacuum (intake air) leak

2. Air flow sensor flap binding or faulty [1]

3. Inadequate fuel delivery to engine Main Fuel Pump

4. Blocked fuel filter Testing and Inspection

5. Idle air stabilizer valve faulty [1]

6. Low fuel pressure Fuel System Pressure Test

7. Fuel injection control unit faulty [1]


[1] For testing procedure, Computers and Control Systems

NOTE: After each symptom, the sub-system that could be the source of the symptom are listed and should be checked in the order they are listed, beginning with #1.