What are the causes of Peugeot 408 engine failure?
2 Answers
Peugeot 408 engine failure causes: 1. Excessive carbon deposits causing ignition difficulties: Too much carbon buildup can lead to reverse breakdown of the ignition coil, resulting in ignition coil failure and poor ignition; 2. Abnormal temperature sensor during cold starts in low temperatures: The main reason for this is extremely low ambient temperatures; 3. Poor fuel quality; 4. Some sensor failures triggering warning lights, with oxygen sensor issues being the most common. The Peugeot 408 has body dimensions of 4750mm in length, 1820mm in width, and 1488mm in height, with a wheelbase of 2730mm. The structure of the Peugeot 408 has been systematically designed, adopting a shared load-bearing monocoque body structure with HLE high-strength body construction. Through a segmented kinetic energy transfer system, it disperses impact energy according to predetermined procedures during collisions.
My Peugeot 408 had its engine warning light come on recently, and it was particularly difficult to drive. Later, it was found to be an issue with the fuel system and sensors. Driving mostly at low speeds in city traffic jams for a long time can easily clog the fuel injectors, and severe carbon buildup can lead to poor fuel supply. Additionally, the air flow sensor was dirty, misjudging the intake air volume and affecting ECU control. I used substandard gasoline once and immediately felt acceleration stuttering. It's recommended to clean the fuel injection system every 20,000 kilometers, check sensor connections, and avoid saving money by using cheap fuel. Also, pay attention to the cooling system, as water pump leaks or insufficient coolant can cause overheating and shutdown. Regular minor maintenance is crucial, such as changing the oil and filters, to prevent small issues from becoming big troubles. If you experience shaking or unusual noises while driving, pull over and check as soon as possible—engine stalling on the highway is highly risky.
