Don’t let a faulty Hyundai Elantra idle air control valve slow you down. Instead, pick up a new one at AutoZone today. When your engine RPM drops low or you notice a backfire in your tailpipe, you may be having issues with your Elantra IAC valve.
Do all cars have an IAC valve?
These days, most new cars have electronic throttle control (ETC), eliminating the need for an IAC. But there are still plenty of IAC-equipped vehicles on the road – and your car is probably one of them (otherwise, you wouldn’t be reading this article, would you?).
Where is the IAC valve located?
Locating the Idle Air Control Valve
The IACV is usually located on the intake manifold near the back of the throttle body.
What are the symptoms of a faulty IAC valve?
Usually, a bad or failing idle air control valve (IAC), will produce a few symptoms, that can alert the driver of a potential issue:
- Irregular Idle Speed. …
- Check Engine Light Illuminated. …
- Rough Engine Idle. …
- Engine Stalling. …
- Stalling Under Load. …
- How To test the coil driver circuits in the (IAC) valve:
How do you adjust the idle on a 2013 Hyundai Elantra?
To control the idle in your Hyundai, you’ll need to adjust the throttle cable.
- Open the hood and locate the throttle body. …
- Locate the throttle adjustment screw. …
- Turn on the vehicle and check the current idle speed after the vehicle has reached normal operating temperature.
What happens if IAC is stuck open?
An obstructed or stuck-shut IAC will result in a rich air-fuel ratio at idle, so the engine will start very easily while cold and then die suddenly after a slight puff of black tail-pipe smoke. A stuck-open IAC might start fine while warm and may continue to run if the engine reaches high-enough RPM.
What happens if I unplug the IAC valve?
Disconnecting the IAC while the engine is idling shouldnt cause much of a change. The IAC will remain in the position it was in, and therefor the engine will continue to run fine so long as it’s air requirements don’t change.
How much does a IAC valve cost?
The replacement cost of an idle control valve is anywhere from $120 to $500. The cost of the parts alone will be between $70 and $400+, depending on the make and model of your vehicle. The labor cost should only be around $50 to $100 because it doesn’t take that long to remove and replace the old idle control valve.
How do I reset my IAC valve?
You can reset the idle air control (IAC) valve by turning the car on, putting the car into park, pressing the brake down, then pushing the gas pedal down, counting down about 5 seconds, turning the car off, waiting 10 seconds and start the car again, checking to see if the car is idling properly.
Can I clean my IAC valve?
How do you clean an IAC valve? After relocating the IAC valve, you need to unscrew it and detach all the wires. You can clean it by soaking it in gasoline and blowing compressed air into it. Then, reattach it with the screws and reconnect the wires.
Can a bad IAC cause no start?
the car won’t start: in extreme cases, the iac valve may cause too much or too little air from entering the engine when you turn the ignition, resulting in engine that cranks but doesn’t start.
How do I test my IAC valve?
To check if an idle control valve is working properly, start by turning on your engine and letting it run for a minute or 2. Then, when it’s at an idling speed, take note of the RPMs in your car. Next, turn the engine off and disconnect the idle control motor under your hood.
Can IAC cause hard start?
If your vehicle has the 4-liter V-6, the problem may be a faulty idle air control valve. Whenever you start the engine, the throttle is closed so the valve meters the proper amount of air for combustion. If it allows too much or too little, the result is hard starting and often rough idle.
Why is my Hyundai Elantra shaking?
The most common causes for Hyundai Elantra shaking at high speeds are unbalanced wheels, misaligned wheels, tire damage, bent rim, bad wheel bearing and loose lug nuts. Less common causes are bad axle, worn suspension or steering parts or incorrect tire pressure.
How can I increase the RPM of idle in my car?
Disconnect the idle air adjustment valve by locating and disengaging the electronic connector that holds it to the throttle body. Turn the idle screw to adjust the idle—turn the screw to the left to increase the RPM or to the right to lower it.
What is the best idle RPM?
The idle speed should feel consistent without skipping or slipping. In most of today’s cars, an idle speed of 600 to 1000 RPMs is average. If your car is idling rough, though, it won’t feel smooth. The RPMs will jump up and down, for example, or they’ll fall below 600 RPM (or whatever is typical for your vehicle).
Does the IAC have a fuse?
One of the leading causes of IAC motor malfunction is a blown or faulty fuse. A malfunctioning fuse in any of the electronically controlled components including the air bag system can disrupt the function of the IAC motor and lead to a higher idle speed than usual.
Can you clean IAC with wd40?
Pull the tank and spray into the hole with the IAC mounted. Cycle the ignition a few times to get the carb or sensor cleaner to penetrate. Some people even use a little wd-40 spray. Removing the IAC is iffy.
What does a bad idle control valve do?
When the idle air control valve fails, it inhibits the flow of air through the engine. When the car can’t receive air, it leads to engine stalling. The severity of this symptom can range from occasional stalling at first, to stalling immediately after ignition.