Hi sir, big fan of yours from Malaysia. I own a 2009 Mercedes Benz w245(b170) that runs good, but just when I'm coming close to a dead stop, it sometimes bucks a couple times before idling down to low RPMS that it should have at stop position. It's like the engine wants to keep going, and doesn't realize, we need to stop. The engine doesn't rev high or anything, it just sort of bucks a couple times. This problem only happens intermittently - not all the time. How can I fix this? My transmission runs and shifts smoothly, and the speed of the car is not affected at all at normal driving speeds, but only when slowing down to come to a stop - may start to buck a bit before stopping. My car does not go into limp mode and Check Engine Light is off & no leaking of oil, spark plug, engine oil, transmission oil all filter has been serviced on time.

Please help...thank you