What Causes the Tiguan to Stall Automatically?
1 Answers
The main reasons for the Tiguan stalling automatically are as follows: 1. Vacuum leak in the intake manifold. 2. Unstable idle speed, such as improper idle adjustment, dirty throttle body, or malfunctioning idle speed control system. 3. Unstable fuel pressure, such as excessive wear or poor contact of the electric fuel pump brush, or clogged fuel pump filter. 4. EGR valve blockage or base leakage. 5. Malfunctioning fuel pump relay, EFI relay, or ignition relay. 6. Poor contact in the fuel pump drive circuit or fuel injector drive circuit. 7. Malfunctioning ignition system.