How long can a car idle with the engine running and AC on?
1 Answers
The following are reasons why a car may stall when idling: 1. Misoperation: Especially for beginners, such as wrong gear selection, excessive braking, clutch-throttle coordination issues, or accidentally turning off the ignition with the key. Restarting the engine usually solves the problem. 2. Dirty throttle body/idle control valve: Mostly occurs during idling, often accompanied by engine shaking. Lightly pressing the accelerator when restarting can help the engine start. It's recommended to clean the throttle body promptly. 3. Fuel system failure: Causes include poor fuel quality, fuel exhaustion, fuel pump burnout, clogged fuel lines, faulty fuel pump fuse, or defective fuel pressure sensor. Inspect relevant components. 4. Ignition system failure: Includes spark plug issues, faulty ignition coils/modules, or aged spark plug wires. Check related components. 5. Throttle body/idle control valve malfunction: These are crucial components in the engine intake system and relatively precise parts. Many cases of stalling or failure to start are caused by damaged throttle assemblies or idle control valves.