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Home >> Volvo >> 2004 >> S40 Base, 1.9 27 >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Ignition And Control Systems - Specifications, Electrical/Electronic (644 Body) >> Parameter Table. Engine Management System (Ems2000) (B4204T3; 2004) >> Description of parameters >> Idle speed pulse ratio
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Idle speed pulse ratio

Measurement range 0 -100%.

Idle air control (IAC) valve opening.

The normal value is approximately 20-40% when idling with the engine at operating temperature.

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