Rough Idle

CHECK:

1. Hoses and Connections

2. Idle Air Control Valve

3. Fuel Injector

4. Injector Resistor

5. Contaminated Fuel [1]

6. Manifold Absolute Pressure Sensor

7. Exhaust Gas Recirculation System


[1] Fuel with dirt, water, or a high percentage of alcohol is considered contaminated.

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.