Skip to content
View in the app

A better way to browse. Learn more.

Ultimate Subaru Message Board

A full-screen app on your home screen with push notifications, badges and more.

To install this app on iOS and iPadOS
  1. Tap the Share icon in Safari
  2. Scroll the menu and tap Add to Home Screen.
  3. Tap Add in the top-right corner.
To install this app on Android
  1. Tap the 3-dot menu (⋮) in the top-right corner of the browser.
  2. Tap Add to Home screen or Install app.
  3. Confirm by tapping Install.

Idle Air Control Valve Question

Featured Replies

Hi,

 

I have a 1994 2.2L Non-Turbo AT FWD Legacy with 180k miles. I removed the IACV to clean and test it. I see the valve open and close on the engine side. On the hose tab, I see a tab sitting about a quarter into the opening. Was wondering if something should be moving on the hose side as well. Didn't think it should but thought I should ask before reinstalling it.

 

Why did I remove it:

Car would not start and after doing some tests just started running again but had a rough idle and threw a Code 24. Tried using seafoam through the hose to the IACV but that didn't help (seemed to make it worse) so thought I would pull and test it.

 

Thanks,

Bob

That tab on the hose side is tied into the coolant lines that go to it. It's a bimetallic strip that opens/closes as coolant temp warms up. It's supposed to help with the cold start warm up.

  • Author

Great. Thanks for the info.

 

-Bob

just checking but did you get a new gasket for reinstalling? I did mine recently and the old one was out of shape and impossible to fit back into the grooves.

  • Author

I did. Mine doesn't have groves to go into though (the engine surface and IACV surface are flat).

Please sign in to comment

You will be able to leave a comment after signing in

Sign In Now

Account

Navigation

Search

Search

Configure browser push notifications

Chrome (Android)
  1. Tap the lock icon next to the address bar.
  2. Tap Permissions → Notifications.
  3. Adjust your preference.
Chrome (Desktop)
  1. Click the padlock icon in the address bar.
  2. Select Site settings.
  3. Find Notifications and adjust your preference.