Rough, Unstable, or Incorrect Idle and Stalling

WARNING: This page is about a different variant/trim than selected.

Observe the TB Idle Airflow Compensation parameter with a scan tool. A value greater than 80 % may indicate an excessive accumulation of deposits in the throttle bore. Inspect the throttle body and clean, if necessary. Refer to Throttle Body Cleaning .
Inspect the mass air flow (MAF) sensor for obstruction, contamination, and damage. Refer to Mass Airflow Sensor with Intake Air Temperature Sensor Replacement .
Inspect the engine mounts.
Inspect the intake and exhaust manifolds for casting flash.