The vibration of the engine when the transmission of the transmission "P" of the transmission and idling speed is due to the activation (at the time of the shutdown of the ACPR) in the Honda CR-V III valve of the exhaust gas discharge valve. Thus, part of the exhaust is fed back into the reception tube immediately behind the air filter to reduce CO in the exhaust at idle. The electronic engine control unit reacts and aligns the idling speed, but a short fall in turnover still occurs. If the engine is cold, there is no loss of torque and vibration, as the valve is activated only when the engine is hot.
