Brad's Car Manuals: A 3rd party mirror of CHARM + LEMON car manuals
Home >> Pontiac >> 2003 >> Aztek AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Basic Diagnostic Procedures >> Idle Speed & Ignition Timing

Idle Speed & Ignition Timing

Download the full database via torrent (~1.1 TB)

Idle speed and ignition timing are controlled by PCM. Incorrect idle speed are normally caused by dirty throttle plate or vacuum leaks. Ensure all vacuum components are functioning properly.