Sensor/System Checks

Check for an Engine Coolant Temperature (ECT) sensor that has shifted in value. See TEMPERATURE VS RESISTANCE table.
Check for proper operation of the Manifold Absolute Pressure (MAP) sensor. See DIAGNOSTIC TROUBLE CODE DEFINITIONS under DIAGNOSTIC TESTS in SELF-DIAGNOSTICS - 2.2L SATURN "L" SERIES article.
Check for proper operation of the Throttle Position (TP) sensor. See DIAGNOSTIC TROUBLE CODE DEFINITIONS under DIAGNOSTIC TESTS in SELF-DIAGNOSTICS - 2.2L SATURN "L" SERIES article.
Check for proper operation of the Intake Air Control (IAC) valve. See IDLE AIR CONTROL SYSTEM under IDLE CONTROL SYSTEM in SYSTEM & COMPONENT TESTS - 2.2L SATURN "L" SERIES article.