What is the reason for the Citroen C-Quatre shaking when cold?
2 Answers
The reason for the Citroen C-Quatre shaking when cold is due to excessive carbon deposits and dirt on the throttle and surrounding intake passages, which changes the cross-sectional area of the air passage. This prevents the control unit from accurately controlling the idle air intake, resulting in an overly rich or lean mixture and abnormal combustion. The dimensions of the Citroen C-Quatre are 4588mm in length, 1800mm in width, and 1496mm in height, with a wheelbase of 2610mm. The body type is a 4-door, 5-seater sedan. The car is equipped with a 1.6L L4 engine, naturally aspirated, with a maximum horsepower of 117ps and a maximum torque of 150nm. The transmission is a 5-speed manual, and the top speed is 192 kilometers per hour.
During car repairs, I've encountered the Citroen C-Elysee shaking when cold, often related to ignition system and fuel issues. When the engine hasn't warmed up upon startup, worn or severely carbon-fouled spark plugs can easily cause unstable ignition and shaking. Aging ignition coils or faulty high-voltage packs are also common culprits affecting ignition energy. On the fuel side, carbon-clogged injectors lead to insufficient cold-start fuel pressure and uneven spray. Carbon buildup in the throttle body disrupts airflow balance, while a dirty idle control valve causes abnormal idle regulation. Aged engine mounts with hardened rubber exacerbate vibrations. Recommended maintenance: check spark plug gaps and replace every 30,000 km, clean throttle body and injectors, use quality fuel additives regularly. Prompt professional inspection prevents safety hazards—prioritize overall engine health.
