LEMON Manuals: Even more car manuals for everyone
Home >> Pontiac >> 1990 >> Sunbird SE, Automatic >> Repair and Diagnosis >> Engine Performance >> Engine Controls - Adjustments - 4-CYL >> Idle Speed >> Notes

Idle Speed: Notes

NOTE: Idle speed is controlled by ECM and slight fluctuations are considered normal. Start and run engine for a minimum of 7 minutes to re-establish ECM control of idle.
NOTE: Incorrect idle speeds are normally caused by dirty throttle plate or vacuum leaks. Ensure all vacuum components are functioning properly.
scientia non olet · About LEMON Manuals