Is the intake manifold runner control important?
Is the intake manifold runner control important?
The intake manifold runner control is an engine management component that is found on newer intake manifold designs. While an intake manifold runner is not necessary for engine operation, it does provide the engine with increased performance and efficiency, particularly at low engine speeds.
What do intake manifold runners do?
Intake runners are the actual tubes that channel intake air from a reservoir, known as a “plenum” to the intake ports. The image above shows a typical intake manifold, on which the runners connect to the plenum individually, as opposed to branching off from a single exit point as was usual on older manifolds.
Where is the runner control on an intake manifold?
The runner control solenoid opens/closes metal flaps which fit snugly into the intake port of each cylinder. The runner flaps are bolted to a thin metal rod that runs the length of each cylinder head and through each intake port.
What causes an intake manifold to get stuck?
Possible causes for this engine code include: Defective IMRC actuator solenoid. Loose or binding intake manifold runners. Bad intake manifold runner position sensor. Open or shorted wiring in the IMRC actuator solenoid control circuit. Faulty MAP Sensor. Corroded IMRC actuator solenoid connector face.
What are the symptoms of a P2004 intake manifold code?
Symptoms of a P2004 code may include: Reduction in engine performance, especially at low RPM levels Possible causes for this engine code include: Loose or binding intake manifold runners Bad intake manifold runner position sensor Open or shorted wiring in the IMRC actuator solenoid control circuit Corroded IMRC actuator solenoid connector face
What is the electronic solenoid on an intake manifold?
The IMRC actuator is attached to the rod with a mechanical arm or a gear. Some models use a vacuum diaphragm operated actuator. An electronic solenoid (controlled by the PCM) regulates intake vacuum to the IMRC actuator in this type of system.
