Possible Causes
Faulty Intake Manifold Runner Position Sensor
Intake Manifold Runner Position Sensor harness is open or shorted
Intake Manifold Runner Position Sensor circuit poor electrical connection
Faulty Intake Manifold Runner Control Solenoid Valve
Mechanical Defect
الأسباب المحتملة
Possible Symptoms
Engine Light ON (or Service Engine Soon Warning Light)
الأعراض المحتملة
Description
Manufacturers can use a variable geometry intake manifold to alter airflow into the manifold under certain conditions. Under low load conditions, a long thin manifold runner is ideal for flow velocity and swirl/turbulence. Under high load demands, a short think runner is ideal. The rate of intake swirl and turbulence is critical to fuel mixture formation and agitation. A position sensor can be fixed to the control circuit to monitor the valve for both electrical and mechanical faults. An actuator test can be performed to test the circuit and live data or an oscilloscope can be used to validate the position feedback.
