Symptoms of a Bad or Failing Idle Control Valve

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Cost of Replacing a Bad or Failing Idle Control Valve

Common signs include irregular or unusually high idle speed, the Check Engine Light coming on, and stalling while idling. Our certified technicians can come to you and diagnose the problem. You will receive a $30 credit towards any follow-up repairs that result from the diagnostic. Following are example prices for Idle Control Valve Replacement. Click on the button below to get an upfront quote for your car.

Cars Estimate Parts Cost Labor Cost Savings Average Dealer Price
2005 Mitsubishi Galant $468 $398.37 $70.00 7% $505.87
2004 Toyota Highlander $416 $261.57 $154.00 16% $498.07
2012 Nissan NV3500 $343 $273.09 $70.00 9% $380.59
2008 Lincoln Mark LT $170 $100.29 $70.00 18% $207.79
2013 Lexus GS350 $311 $241.41 $70.00 10% $348.91
2013 Porsche Cayenne $606 $536.08 $70.00 5% $643.58
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How to Diagnose a Bad or Failing Idle Control Valve?

idle control valve

The idle control valve, also commonly referred to as the idle air control valve, is an engine management component that is found in one form or another on the majority of road going vehicles. Its purpose is to control and regulate the engine idle speed, increasing and decreasing it as necessary to keep up with operating conditions.

Most idle control valves come in the form of a motorized valve or motor that is mounted somewhere on the vehicle’s intake manifold. The valve or motor is controlled by the engine control module, which will adjust the idle speed according to parameters such as engine temperature and electrical system load.

When the idle control valve fails it can cause all sorts of issues with the vehicle, and in some cases may even render it undrivable. Usually a bad or failing idle control valve will produce a few symptoms that can alert the driver of a potential issue.

1. Irregular idle speed

One of the most common symptoms commonly associated with a problematic idle air control valve is irregular idle speed. The idle air control valve is programmed to regulate and maintain the engine idle speed at a constant rate. If the valve fails or has any issues it can cause the idle speed to be thrown off. This may result in an unusually high or low idle speed, or in some cases a surging idle speed that repeatedly climbs and falls.

2. Check Engine Light comes on

Another symptom of a potential issue with the idle control valve is an illuminated Check Engine Light. If the engine control module detects an issue with the idle air control valve circuit or signal, it will set off the Check Engine Light to notify the driver that there's an issue. The Check Engine Light can also be set off by a wide variety of issues, so having the computer scanned for trouble codes is highly recommended.

3. Engine stalling

Another more serious symptom of an issue with the idle control valve is engine stalling. If the idle control valve fails completely, it may leave the vehicle without a source of air to maintain a proper idle. This may result in the engine stalling while operating, and in some cases may result in an engine that will not idle at all, and stalls as soon as it is started.

Usually a faulty idle control valve will produce symptoms noticeable enough that the driver will quickly become aware that there is an issue. If your vehicle is experiencing any of the symptoms above, or you suspect that your idle control valve may be having a problem, have the vehicle diagnosed by a professional technician, such as one from YourMechanic, to determine if the idle control valve needs replacement.

valves
Stalling
engine idle

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Recent Idle Control Valve Replacement reviews

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YourMechanic Idle Control Valve Replacement Service

Average Rating

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Number of Reviews

112

Rating Summary
107
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107
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Jamahl

17 years of experience
703 reviews
Jamahl
17 years of experience
excellent work, I have confidence in my car again and my mechanic.
2000 HONDA CIVIC - IDLE CONTROL VALVE - KISSIMMEE, FLORIDA

Nelson

23 years of experience
162 reviews
Nelson
23 years of experience
Mr. Raj showed up in excellent time for the appointment, and handled the repair and transaction perfectly. He did exactly what I asked him to do, and was perfectly polite, as well. Thank you.
2000 CADILLAC DEVILLE - IDLE CONTROL VALVE - SACRAMENTO, CALIFORNIA

Doug

31 years of experience
97 reviews
Doug
31 years of experience
Very knowledgeable
2004 HONDA ACCORD - IDLE CONTROL VALVE - MORENO VALLEY, CALIFORNIA

John

24 years of experience
254 reviews
John
24 years of experience
John was great! He took extra care when he replaced the idle control valve in my 2001 Accord LX. He cleaned the throttle body and resurfaced the headlights at no additional charge. In addition, he took time to explain the repair work step by step. After the repair, my car is running like a new car, much more responsive and powerful. I can not be happier with John's work.
2001 HONDA ACCORD - IDLE CONTROL VALVE - PEARLAND, TEXAS

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