What is the reason why Volkswagen Tiguan L330 will die?

The automatic flameout of Volkswagen Tiguan may be caused by vacuum leakage of intake pipe, improper idle speed adjustment, unstable fuel pressure, or poor contact of fuel injector drive circuit.

1, vacuum leakage of intake pipe;

2. Idle speed instability caused by improper idle speed adjustment, dirty throttle body and poor idle speed control system;

3. The fuel pressure is unstable, such as excessive wear or poor contact of the electric fuel pump brush, or blockage of the fuel pump filter screen.

4.EGR valve is blocked or leaks at the bottom;

5. The fuel pump relay, EFI relay and ignition relay are not working properly;

6. Poor contact between the fuel pump drive circuit and the fuel injector drive circuit;

7. The ignition system doesn't work well. For example, the high-voltage spark is weak, the spark plug is used for a long time, the ignition timing is incorrect, the ignition coil is not in good contact or there is a turn-to-turn short circuit in hot state, resulting in no high-voltage spark or weak high-voltage spark, the low-voltage wire is in poor contact, the insulation glue is damaged, and the grounding is intermittent.

If it is sudden flameout, it is recommended that you focus on checking the ignition system (such as crankshaft position sensor and related circuits); If it is shaking flameout, I suggest you check the fuel pressure, ignition energy, intake system, etc. If the flameout is caused by traveling car, it is recommended that you check the vacuum leakage and engine load (such as air conditioning magnetic switch, gear switch, etc.). Whatever the reason, you need to go to the maintenance station for an in-depth inspection.