Faulty Intake Manifold Runner Control (IMRC) Valve
IMRC Valve harness is open or shorted
IMRC Valve circuit poor electrical connection
Engine Light ON (or Service Engine Soon Warning Light)
Engine power is achieved by closing and opening the Intake Manifold Runner Control (IMRC) valve. When the valve is closed, there is high torque at low engine speed. When the valve is open, there is high torque a high engine speed.