Is it necessary to replace the intake manifold flap if it makes abnormal noise?

[JoyRose]

It is necessary to replace the intake manifold flap if it makes abnormal noise. Reasons for replacement: The intake manifold refers to the intake pipe between the carburetor or throttle body and the cylinder head intake port. Its function is to distribute the air-fuel mixture from the carburetor or throttle body to each cylinder's intake port. The vacuum booster on the brake requires vacuum, which comes from the intake manifold. Otherwise, it will affect the braking effect, which is very unsafe. Method for replacing the intake manifold: Turn off the engine and disconnect the negative terminal of the battery, open the hood, first remove the manual maintenance switch, electronic throttle body, and intake temperature sensor, then remove the clamps fixing the intake pipe one by one, move the pipe away, remove the screws on the intake manifold assembly, and take out the assembly.