When contamination builds up inside the idle air control valve, the IAC may become faulty and not work as it should.Ĭleaning away any built-up debris or contamination can help you to reset the IAC valve back to working order. How To Clean IAC valveĪn IAC valve may not be performing correctly because it is dirty and is in need of some cleaning maintenance.ĭuring combustion, carbon and debris can settle on the IAC valve, and this can build up over time. Step 6įinally, turn the car back on and check the vehicle is idling correctly. Next, turn the car off and leave it off for approximately 10 seconds. you can now just leave the car in the ON position for approximately 5 seconds. Put the car into park (P) and press the brake down Step 3 If you want to try resetting the IAC valve, here is our easy to follow step-by-step guide Step 1 Resetting the valve is not a permanent fix but it may be enough to keep your IAC working until you are able to get it repaired or replaced. If the RPMs are low, this can indicate that there is a problem with the IAC valve or there may be a vacuum leak in one of the vehicle’s systems.Īfter testing the IAC valve, if an issue is detected you can try to reset the valve. This figure should be no lower than 600 and no higher than 1000. Listen carefully to the car engine as it sits and idles. Turn both the radio and air conditioning off, you want to be able to hear clearly. Here is a brief guide on how to perform the IAC valve test: Step 1 If you notice your vehicle is displaying signs of a faulty IAC valve, you will need to troubleshoot and check it is definitely the idle air control that is causing these problems. Before rushing to reset the IAC valve, first, you can perform a quick test of the valve to see if it is working correctly or not. How To Reset IAC Valve – A Step-By-Step Guide A professional diagnostic will reveal the true cause of your car’s issues, but you can try and test and reset your IAC valve yourself – keep reading to find out how. It is always best to seek professional advice if you are concerned about the IAC valve. However, it is also important to note that the symptoms listed above can also be signs of other engine issues. It is important to know the signs of a malfunctioning IAC as if your car is not idling correctly, you may end up with serious engine damage.
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