Section 11 (Engine Control System - Basic Engine Testing - 3.8L): Summary
WARNING: This page does not describe the selected car, but rather 11 other vehicles, including the 1997 Pontiac Grand Prix, 1997 Pontiac Firebird, 1997 Pontiac Bonneville, 1997 Oldsmobile Regency, and 1997 Oldsmobile LSS. However, it is still accessible from the selected car via links, so may be relevant.
If no faults were found while performing BASIC DIAGNOSTIC PROCEDURES, no trouble codes (or only intermittent ones) were found while performing ON-BOARD DIAGNOSTIC SYSTEM CHECK and driveability problems exist, proceed to the TESTS W/O CODES article for diagnosis by symptom (i.e., ROUGH IDLE, NO-START, etc.) or intermittent diagnostic procedures.