What causes the BYD F3 to sometimes stall automatically?

[JuniperRose]

Here are the reasons why the BYD F3 sometimes stalls automatically: 1. Intake pipe: Vacuum leakage in the intake pipe. 2. Idle speed: Unstable idle speed caused by improper idle adjustment, dirty throttle body, poor idle control system performance, etc. 3. Fuel pressure: Unstable fuel pressure, such as excessive wear or poor contact of the electric fuel pump brush, or clogged fuel pump filter screen. 4. Ignition system: Poor performance of the ignition system. For example, high-voltage sparks, spark plugs used for too long, incorrect ignition timing, poor contact of the ignition coil or inter-turn short circuit in the hot state resulting in no high-voltage spark or weak high-voltage spark, poor contact of the low-voltage line, damaged insulation adhesive intermittently grounding, poor grounding.

[IanLynn]

I've been driving a BYD F3 for several years and have encountered similar issues. Common causes of automatic stalling include ignition system problems such as aging spark plugs leading to unstable ignition, or fuel system issues like insufficient power supply to the fuel pump causing fuel interruption. Poor electrical circuit connections are prone to problems in hot and humid weather, such as loose wiring harness connectors causing short circuits and shutdown. Excessive carbon buildup in the idle control motor can also be a factor, as can contaminated sensors like the air flow meter misleading the computer into commanding a shutdown. It's advisable to check the battery voltage when parked, as unstable alternator output is one of the contributing factors. Cleaning the throttle body and replacing the fuel filter usually help. If you encounter this situation, pull over immediately and don't take risks—send it to a professional shop to read the fault codes for troubleshooting.

[EmilyLynn]

My experience suggests that the stalling of a BYD F3 could stem from several areas. Fuel issues, such as clogged fuel lines or dirty injectors, can affect fuel supply stability. Aging ignition coils with weak sparks may cause the engine to stop. Electrical problems, like blown fuses or corroded connections, can interrupt current flow. Additionally, a faulty engine control module (ECM) can lead to sudden shutdowns. Temperature changes causing component contraction can exacerbate these issues. It's advised to turn on hazard lights and pull over slowly after stalling to prevent rear-end collisions. Regular maintenance should include cleaning intake pipes and changing engine oil. Recording the vehicle's speed and conditions at the time of stalling aids in diagnosis and prevents recurrence.

[LaValeria]

I think the common factors for the BYD F3 stalling automatically are failures in the idle speed control system, such as a stuck idle speed motor or throttle valve dirt affecting stability. There are also fuel system issues, such as insufficient fuel pump pressure, which can easily cause stalling when climbing hills. Minor repairs can solve the problem: replacing spark plugs, checking wire connections, and cleaning sensors. Doing it yourself is simple and cost-effective, such as cleaning the fuel injector filter screen or replacing the air filter for prevention. Battery aging and low voltage can also trigger the computer's protective shutdown. It is recommended to regularly measure the voltage to maintain power and avoid unexpected shutdowns that could delay your trip.