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Home >> Chevrolet >> 1990 >> Cavalier Z24, Standard >> Repair and Diagnosis >> Engine Performance >> Adjustment >> Engine Controls - Adjustments - 4-CYL >> Idle Speed >> Notes
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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.