Diagnostic Aids
WARNING: This page is about a different car, the 2002 Pontiac Firebird and 2002 Chevrolet Camaro. However, it is still accessible from the selected car via links, so may be relevant.
Inspect for the following:
- The throttle blade for damage
- A skewed cam sensor signal. Inspect for signals that are intermittently shorted to ground, causing a fluctuating RPM on the scan tool.
If DTC is determined to be intermittent, see INTERMITTENT CONDITIONS under SELF-DIAGNOSTIC SYSTEM.