What to Do When BYD F3 Has Unstable Idle and Stalls While Driving?

[DelNatalie]

BYD F3 has unstable idle and stalls while driving. The causes and solutions are as follows: 1. Unstable idle: This may be due to excessive carbon deposits in the throttle or a damaged idle motor. Solution: It is recommended to clean the throttle or replace the idle motor. 2. Stalling while driving: (1) Circuit failure: Check the ignition and starter switches as well as the fuse box. (2) Short circuit in low-voltage lines: Inspect the low-voltage lines. (3) Component failure, fuel system failure, or ignition system failure. Solution: It is recommended to visit a 4S shop to inspect components, fuel lines, ignition coils, etc.

[SanTeagan]

As a long-time F3 owner, I've encountered this issue several times, and it can be quite frightening, especially when the car suddenly stalls while driving. Unstable idling is usually related to carbon buildup. The BYD F3 engine is prone to dust accumulation around the throttle body, which can obstruct airflow and cause shaking or stalling. My approach was to first safely pull over, turn on the hazard lights to ensure personal safety, then open the hood to check the spark plugs. If they were worn out, I'd replace them myself—it's just a matter of a few dollars. I also tried cleaning the throttle body with a professional cleaner spray. If the problem persists, it might be a fuel pump failure or an issue with the mass airflow sensor. I recommend going to a 4S shop promptly for a computer diagnosis—don't delay repairs. Spending a bit on maintenance ensures driving safety. Regular annual system cleanings can effectively prevent such unexpected incidents, making driving worry-free and safe.

[SanAlessandra]

From my experience with cars, the unstable idle speed of the BYD F3 leading to stalling while driving is mostly due to faults in the fuel supply or ignition system. For example, clogged fuel injectors can affect fuel supply uniformity, or excessive spark plug gaps can cause poor ignition. The troubleshooting steps are simple: find a safe place to park to avoid secondary accidents; manually check the air filter and replace it if dirty—it’s not costly; use a multimeter to test the fuel pump voltage to determine if it’s normal; if DIY is troublesome, directly contact a repair shop technician to use diagnostic tools to read ECU error codes for targeted solutions. Regularly avoid low-quality fuel to prevent carbon buildup and extend the car’s lifespan.

[SebastianLee]

Encountering an F3 stalling while driving can be quite scary. I once had this happen and quickly pulled over to the roadside. Idle instability is a common issue that requires quick troubleshooting. Start with the basics: check the spark plugs and replace them if damaged. Also, try cleaning the throttle body with a damp cloth. If that doesn't work, check the fuel pressure to see if the fuel pump is functioning properly. It's best not to tinker blindly—seek professional help to avoid further risks and ensure driving safety.