Bad idle air control valve
Controls engine idle speed for stable operation.
Costs
Every car issue can be caused by different things. Here are the most common ones
max.
Potential Causes
- Spare parts
- Work time
max.
Potential Causes
- Spare parts
- Work time
max.
Potential Causes
- Spare parts
- Work time
max.
Potential Causes
- Spare parts
- Work time
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Details
Probability
Based on the values and symptoms you have entered, a crude estimation of the probability of this problem can be made
HIGH
Typical consequences
If this defect is detected, it may lead to the following problems:
- Changed driving behavior
- Failure of the exhaust emission test (Failure to pass the exhaust emission test)
Functionality idle control
When a vehicle is idling, a predefined speed is monitored and controlled by the engine control unit. Deviations are detected and corrected, and an error is stored in the event of failure. The idle control valve, a bypass air valve, is responsible for regulating the engine speed when the vehicle is stationary.
When there is a sudden change in engine speed due to the use of air conditioning or other electrical loads, additional air and fuel demand is recorded. If the engine speed drops below a setpoint, the valve is activated, increasing air flow and simultaneously extending the opening time of the injectors for adjustment.