Why is the BYD F3 idling high?
2 Answers
The reasons for high idling in the BYD F3: 1. Long-term use of low-quality gasoline, prolonged low-speed driving, extended idling, and early gear shifting can exacerbate carbon buildup, contaminating components such as the throttle body, idle valve, and fuel injectors, leading to abnormal idling. 2. Improper maintenance can also cause abnormal idling. Using low-quality air filters and neglecting regular maintenance directly affects the quality of air entering the engine, resulting in high idling. The BYD F3 is an A+ class sedan produced by BYD Auto. In terms of body dimensions, it measures 4533mm in length, 1705mm in width, and 1490mm in height, with a wheelbase of 2600mm.
My BYD F3 has been idling a bit high recently, and I've been thinking about several possible causes. High idle speed is commonly caused by excessive carbon buildup in the throttle body, where dust accumulation blocks the air passage, leading to uneven air intake. It could also be an issue with the mass airflow sensor, which incorrectly transmits intake air data to the ECU, causing the idle speed to remain too high. If there's a leak in the vacuum line, external air sneaking into the system can also increase idle speed. Additionally, if the battery has been disconnected, the ECU's memory loss may require relearning idle parameters, which can cause a temporary high idle. Aging of the throttle position sensor may also misjudge the position. I recommend first checking for trouble codes with a diagnostic tool. If you don't have the tool, try simply cleaning the throttle body; if that doesn't work, take it to a professional repair shop for a thorough inspection to avoid skyrocketing fuel consumption and engine damage. Regular cleaning of the throttle body and checking sensor lifespan can help prevent this issue.
