Why does the car stall after ignition?
1 Answers
The reasons why the car stalls after ignition are as follows: 1. The vehicle's anti-theft system is triggered, locking the engine, allowing it to start but not run. Releasing the key causes the engine to stall, and the anti-theft light comes on. This is mostly due to the owner privately making a key without a chip to prevent key loss, or the key being dropped, weakening the signal and making it unrecognizable by the system. 2. Ignition switch failure: the ignition line has power when starting, but releasing the key cuts off the power and the engine stalls. This is usually caused by poor contact of the internal contacts of the ignition switch, often accompanied by the dashboard battery light, oil light, and engine fault light not illuminating. 3. Damaged ignition module or damaged ignition reference signal line from the ignition module to the engine computer. During the initial start-up when the engine speed is below 500r/min, the ignition module controls the ignition based on the crankshaft and camshaft position sensor signals and its internal data. When the engine speed exceeds 500r/min after starting, the ignition and fuel injection control are transferred to the engine computer, which performs comprehensive control based on various sensor signals and the ignition reference signal sent by the ignition module.
