Common questions

Where is the idle control air valve?

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Where is the idle control air valve?

throttle body
The idle air control (IAC) valve is located on the throttle body of fuel-injected engines, where it works with the vehicle’s ECU to electrically regulate airflow to the engine to ensure smooth idling.

What are the symptoms of a bad idle air control 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:

Where is IACV on Honda Civic?

Location. The air control valve on your Honda is mounted on the throttle body or intake manifold.

How do I clean my idle air control valve without removing it?

How To Clean Idle Air Control Valve Without Removing It

  1. Prepare the working area.
  2. Locate the idle air control valve.
  3. Remove the filter box and the air duct.
  4. Disconnect the clamps that connect the air duct to the throttle body.
  5. Locate the passage to the idle air control valve.
  6. Spray the hole with throttle body cleaner.

Can I clean idle air control 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.

What happens if idle air control valve is stuck open?

Q: What happens if idle air control valve is stuck open? If a car’s idle air control valve is stuck open, it will create a rich air-fuel ratio while the vehicle idles. Therefore, the car’s engine may start well while warm and run until it reaches a high enough RPM.

How do I fix code P0505?

What repairs can fix the P0505 code?

  1. Replacing the IAC valve and cleaning the throttle body and passages.
  2. Removing carbon from throttle body and IAC passages and clean IAC.
  3. Repairing a vacuum leak in the engine intake manifold vacuum system or gaskets.

Can you drive with a bad idle air control valve?

Technically, you may be able to drive with a bad IAC—but you should not continue doing so. A bad IAC can potentially lead to stalling, which can compromise vehicle safety. Plus, you won’t pass a state emissions test if the check engine light is on due to a bad IAC.

How do I relearn idle?

A. Idle Relearn

  1. Start the engine in Park/Neutral. Rev the engine to above 2,500rpm and hold for 10-15 seconds.
  2. Slowly reduce throttle back to idle.
  3. The ECU should now begin to learn the idle position (you will hear the sucking sound through the throttle body change as the Idle Air Control Motor changes position).

How do I check my Honda IACV?

If you want you can test the IACV. Shut the car off and put + battery voltage to the blk/yel terminal (on the valve) and momentarily touch ground to the blu/yel side. When doing this the valve should click, if it doesn’t, replace it.

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