Engine Controls - Tests W/O Codes - EEC: Symptoms: Surges

Check for vacuum leaks.
Check ignition system. See F - EEC BASIC TESTING article in the ENGINE PERFORMANCE Section.
Ensure idle speed is correct. See IDLE SPEED in ADJUSTMENTS article in the ENGINE PERFORMANCE Section.
Check fuel delivery system. See I - EEC SYS/COMP TESTS article in the ENGINE PERFORMANCE Section.
Perform QUICK TEST. See G - EEC TESTS W/CODES article in the ENGINE PERFORMANCE Section.
Check EGR system. See I - EEC SYS/COMP TESTS and G - EEC TESTS W/CODES articles in the ENGINE PERFORMANCE Section.
Check air intake system. Also, ensure throttle plate and linkages operate properly.
Check Evaporative Emission (EVAP) system. See I - EEC SYS/COMP TESTS and G - EEC TESTS W/CODES articles in the ENGINE PERFORMANCE Section.