How does a idle speed control actuator work?
The actuator consists of a linear servo actuator servomotor that controls a plunger which varies air flow through the throttle body. The position of the servomotor and hence the amount of air bypass is controlled digitally by the engine ECU. This allows the engine’s idle speed to be maintained constant.
Where is the idle speed control actuator located?
Its job is rather simple but crucial for the engine to run smoothly. The idle air control valve is usually installed in engines which are fuel injected. In carbureted vehicles, a similar device is present which is called the idle speed control actuator.
What happens if the idle speed control valve goes bad?
If there was no idle speed control valve, then your engine would just stall every time you stop the vehicle. By having a fully functional idle speed control valve, the engine idle speed never goes below 900 RPM or above 1,100 RPM. If you have an idle speed control valve which is starting to go bad, then you need to replace it as soon as possible.
How does an idle air control valve work?
The engine control unit is what manages the function of the valve. Based on the information it receives like engine load and temperature, it will change the speed of the idle accordingly. Engine speed refers to the number of revolutions it makes per minute. This is commonly referred to as the RPM.
What are the symptoms of a bad throttle kicker actuator?
Symptoms of a Bad or Failing Throttle Kicker Actuator. 1 1. Throttle hesitation. Most of the time, the engine responds to throttle pressure applied by the driver without stumbling or hesitation. However, 2 2. Poor fuel economy. 3 3. Engine stalling often.
How does the idle speed control actuator work?
An idle speed control actuator is controlled by an idle speed control actuator solenoid. This solenoid is controlled by a control module. When this solenoid is turned off, no vacuum is routed to the idle speed control actuator, allowing it to open the throttle slightly to increase idle speed.
If there was no idle speed control valve, then your engine would just stall every time you stop the vehicle. By having a fully functional idle speed control valve, the engine idle speed never goes below 900 RPM or above 1,100 RPM. If you have an idle speed control valve which is starting to go bad, then you need to replace it as soon as possible.
What are symptoms of failing Idle Air Control ( IAC ) valve?
Symptoms of a failing idle air control valve. A faulty idle air control (IAC) valve can cause a number of problems with your vehicle: 1. Incorrect idle speed: An IAC valve that sticks in the closed position will create an idle speed that’s too low.
Can a bad idle air control cause vibration?
When the engine of your vehicle sounds off on idle, the idle air control valve may be faulty. In most cases, a bad valve will also produce a vibrating effect throughout the vehicle. If this is the case, you may need to have a professional check it as soon as possible.