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GReddy_Civic -> DIY: How to Clean Your IACV (3/21/2008 8:22:45 PM)
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I’ve been noticing that a lot of people are having problems with their car idle being irregular here on the forum. A possible cause could be a clogged IACV (Idle Air Control Valve). To fix this problem is very simple.
Tools Needed: 12mm socket and wrench
Brake or Carb Cleaner
Philips Screwdriver
Old rag to help with overflow from heater lines
First, locate the IACV. It’s in the back of the engine bay by the intake manifold and throttle body. I have circled it below (should be located here for most, if not all, D and B series).[image]http://i181.photobucket.com/albums/x265/greddy_civic/DIY%20Pics/Untitled.jpg[/image]
[image]http://i181.photobucket.com/albums/x265/greddy_civic/DIY%20Pics/Untitled1.jpg[/image]
The next step is to loosen the two 12mm bolts that hold it on.[image]http://i181.photobucket.com/albums/x265/greddy_civic/DIY%20Pics/Untitled2.jpg[/image] After removing the two bolts, unplug the electrical connection and also the two hoses leading into the IACV. Take the old rag to keep from the fluid in the heater lines from spilling everywhere. *Note- If you are having problems with the hoses being stuck, spray some WD40 or other lubricant on them and it is a wise idea to also replace the clamps on the hoses due to the fact that they will never work as well after this* You should now have something like this.
[image]http://i181.photobucket.com/albums/x265/greddy_civic/DIY%20Pics/Untitled3.jpg[/image]As you can see, my screen is a tad bit clogged up. Take the brake or carb cleaner and spray it on the screen. Leave sufficient time for this to dry before reinstalling it. You should have something like this.
[image]http://i181.photobucket.com/albums/x265/greddy_civic/DIY%20Pics/Untitled4.jpg[/image]
While you have this piece off, you can remove these screws to make sure the gasket underneath is still in good condition, and in my case it was.
[image]http://i181.photobucket.com/albums/x265/greddy_civic/DIY%20Pics/Untitled5.jpg[/image]
Installation is the opposite of removal. Once you have it reinstalled, start it up to make sure it runs! Hope this helps.
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