Where is the Audi's intake manifold stuck in the open position?
1 Answers
Audi's intake manifold stuck in the open position is caused by: a water pump issue, where the vacuum system of the water pump is damaged, affecting the intake manifold's flap. The variable intake manifold stuck in the open position is determined by the engine's ECU based on data stored in the memory, reflecting a fault code. The reasons for this are either a damaged position sensor or an intake manifold fault, which can be repaired at a 4S shop. Function of the intake manifold: For carburetor or throttle body fuel injection engines, the intake manifold refers to the intake passage from the carburetor or throttle body to the cylinder head's intake port. Its function is to distribute the air-fuel mixture from the carburetor or throttle body to each cylinder's intake port. Advantages of plastic intake manifolds: Lower cost and lighter weight. Additionally, since PA has lower thermal conductivity than aluminum, the fuel injectors and incoming air temperature are lower. This not only improves hot start performance and increases engine power and torque but also helps avoid heat loss in the pipe during cold starts, speeding up the increase in gas temperature. Moreover, the smooth inner wall of the plastic intake manifold reduces air flow resistance, thereby enhancing engine performance.
