What Causes the Shaking After Stop-and-Go Driving in the Atenza?
3 Answers
Some shaking after stop-and-go driving is generally caused by three situations: first, the high water temperature causes the radiator fan to operate, resulting in shaking; second, the shaking is transmitted from nearby diesel vehicles; third, the engine is operating unstably or the engine mounts are severely aged. Below is more information about this model: 1. Exterior: It adopts Mazda's latest "KODO" design language. The "U"-shaped face and LED headlights, with LED daytime running lights added to the headlight assembly of the new car. 2. Powertrain: As Mazda's new generation flagship model, one of the Atenza's biggest highlights is the application of Mazda's SKYACTIV Technology. Compared to traditional naturally aspirated engines, the Atenza's SKYACTIV engine has a high compression ratio of 13:1, improving fuel economy and torque by 15%. The new car comes standard with features like the i-stop idle stop system and brake energy regeneration system. The Atenza 2.5L model accelerates from 0 to 100 km/h in just 8.3 seconds, with a combined fuel consumption as low as 6.9 liters per 100 km, while the 2.0L model has a combined fuel consumption of only 6.3 liters per 100 km.
I used to commute with an Atenza as well, and it shook badly during stop-and-go traffic, likely due to carbon buildup in the throttle body. Excessive carbon deposits can obstruct airflow, causing the engine to struggle at low speeds and resulting in shaking. Worn-out spark plugs can also lead to unstable ignition, especially with the increased burden on ignition coils during frequent starts and stops. I encountered a similar situation before—after cleaning the throttle body at a repair shop, it ran much smoother. I recommend getting it checked early to avoid worse issues. Also, remember to use genuine fuel additives to clean carbon deposits, and driving more on highways can help alleviate the problem. Don’t underestimate the shaking—delaying repairs can increase fuel consumption and even lead to major engine problems.
Experienced in handling such faults, the stop-and-go shaking in the Atenza is commonly caused by ignition system issues, such as worn-out spark plugs or aging ignition coils. Unstable current during low-speed start-stop operations can lead to ignition failure, causing the engine to vibrate. The fuel system may also be at fault; clogged fuel injectors can result in uneven air-fuel mixture, or a dirty throttle position sensor can send inaccurate signals. For automatic transmissions, worn-out transmission clutches can cause shaking during gear shifts. It is recommended to use a diagnostic tool to read fault codes, prioritize replacing spark plugs, and check if the fuel filter is clean. Older vehicles with more carbon buildup require more maintenance, and damaged engine mounts should also be inspected as they fail to absorb vibrations.
