Intake and throttle The intake system for the and included a 'sound creator', damper and a thin rubber tube to transmit intake pulsations to the cabin.
In contrast to a conventional throttle which used accelerator pedal effort to determine throttle angle, the FA20D engine had electronic throttle control which used the ECM to calculate the optimal throttle valve angle and a throttle control motor to control the angle.
Pressed by hydraulic pressure from the oil pump, the detent oil passage would become blocked so that it did not operate.