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Home >> Lexus >> 1993 >> SC 400 >> Repair and Diagnosis >> Engine Performance >> Engine Controls - Adjustments >> Idle Speed & Mixture >> Idle Mixture

Idle Mixture

NOTE: Idle mixture is computer controlled and is not adjustable. If vehicle fails emissions test, O2 sensor may be faulty. See O2 SENSOR under ENGINE SENSORS & SWITCHES in SYSTEM & COMPONENT TESTING article.
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