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Home >> Sterling >> 1988 >> 825 SL, 2.5 A >> Repair and Diagnosis >> Engine Performance >> System >> Fuel Injection System - PGM-FI System >> Operation >> Fuel Control Input Signals >> Idle Mixture Adjuster (IMA) Sensor

Idle Mixture Adjuster (IMA) Sensor

The primary function of this sensor is to maintain correct air/fuel ratio at idle or when an injector is replaced. The IMA sensor is mounted in control box. This sensor maintains correct air/fuel ratio at idle. Turning adjuster changes voltage signal to ECU, which in turn alters fuel discharge duration.