What causes abnormal power drop and engine stalling in BMW X5?
2 Answers
The reason is the blind removal of the engine thermostat, which can be resolved by reinstalling the thermostat. Clogged air filter: The engine's intake system mainly consists of two parts: the air filter and the intake duct. Depending on usage conditions, the air filter should be cleaned regularly. One method is to use high-pressure air to blow dust out from the inside to the outside. Since the air filter is made of paper, care should be taken not to use excessively high air pressure to avoid damaging the filter. Generally, the air filter should be replaced after being cleaned three times, and the cleaning interval can be determined based on the air quality of the usual driving area. Dirty intake duct: If the vehicle frequently operates in areas with high dust levels and poor air quality, attention should be paid to cleaning the intake duct to ensure smooth airflow. The intake duct is crucial for the normal operation of the engine. If it becomes too dirty, it can lead to a decrease in charging efficiency, causing the engine to operate outside its normal power output range and accelerating engine wear and aging.
I often encounter this issue with my high-end SUV. The BMW X5 engine power drops and stalls, and there are quite a few reasons for this. The fuel system is the most prone to failure—for example, insufficient fuel supply from the gasoline pump, clogged fuel lines, or a dirty filter can lead to incomplete combustion. The ignition system is also critical; aging spark plugs or ignition coils can cause cylinder misfires. Faulty sensors like the throttle position sensor or oxygen sensor can disrupt the ECU's control, causing the engine to malfunction. Additionally, leaks or sticking in the turbocharging system can significantly reduce power. It's advisable not to delay—take it to a professional repair shop immediately. BMW models, in particular, require precise diagnostic tools, and attempting DIY repairs might make things worse.
