Erratic Idle Or Surging

Check listed items as follows:

• Check for vacuum leaks.
• Check spark plugs.
• Check distributor.
• Ensure fuel pressure is correct.
• Check idle air control motor.
• Check minimum idle airflow.
• Check crankshaft position sensor.
• Check MAP sensor.
• Check TP sensor and connector.
• Check ignition timing.
• Check oxygen sensor switching.