Signs of a Bad or Faulty Intake Manifold Control System

Common symptoms include difficulty starting the engine, the Check Engine light coming on, engine misfiring, and reduced power and acceleration.

The intake manifold guide control is an engine management component found in newer intake manifold designs. This is usually a motorized or vacuum unit attached to the intake manifold that controls the opening and closing of the throttle valves inside the intake manifold rails. The unit will open and close the throttle valves to provide maximum manifold pressure and flow at all engine speeds.

Although the intake manifold guide is not essential for engine operation, it provides the engine with increased performance and efficiency, especially at low engine speeds. When the intake manifold runner control fails, it can leave the engine with no performance gain, and in some cases, even reduced performance. Usually, a faulty intake manifold guide control causes several symptoms that can alert the driver to a potential problem.

1. Difficulty starting the engine

One of the first signs of a malfunction in the intake manifold control system is difficulty starting the engine. The intake manifold guide control is usually positioned when the vehicle is started. If the unit is faulty, it may position the throttles incorrectly, which can make it difficult to start the engine. It may take more starts than usual to start the engine, or it may take several turns of the key.

2. Engine misfiring and reduced power, acceleration and fuel economy.

Another sign of a potential intake manifold rail control problem is engine running problems. If there is a problem with the intake manifold guide control, it can cause the car to experience engine performance issues such as misfiring, reduced power and acceleration, reduced fuel efficiency, and even engine stall.

3. Check Engine light comes on.

A lit Check Engine light is another sign of a possible problem with the intake manifold rail control. If the computer detects a problem with the intake manifold rail position, signal, or control circuit, it will illuminate the Check Engine light to alert the driver to the problem. The Check Engine Light can also be caused by a number of other issues, so it is necessary to scan your computer for trouble codes.

Although intake manifold runner control units are not fitted to all road vehicles, they are an increasingly common way for manufacturers to maximize engine performance and efficiency, especially for smaller engines. It is also important to note that similar symptoms can occur with other engine performance problems, so it is recommended that the vehicle be inspected by a professional technician, such as one from AvtoTachki, to determine if the manifold guide control should be replaced. .