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Cleaning Idle Air Control Valve

December 10, 2009 by admin

How To Clean IAC valve:

Tools needed:
– 10 and 12 mm sockets
– 3 inch socket extension
– universal joint (swivel pivot socket thing)
– 12-inch ratchet (a short ratchet may not work – need something to apply a lot of torque to loosen the bolts)
– Phillip’s screwdriver
– rag
– throttle body cleaner

1. Unplug the 4 connectors from the IAC assembly. Undo the hose that connects the IAC to the
intake assembly.

2. The metal bracket holding up the gray-colored connector is blocking one of the IAC mounting
bolts. Using a 10mm socket, remove the bolt that holds the metal bracket. The bolt is just
below the purple connector – you have to twist your head and crane your neck around to see
the bolt.

3. Remove the 3 mounting bolts using the 12mm socket. The lowest bolt may require the Universal joint.

4. Pull out your IAC valve and clean it w/throttle body cleaner, rag, and old toothbrush.

You may even want to separate the plastic valve to clean it more thoroughly. Use a philip’s head
screwdriver, but make sure it is a snug fight. It’s on there tight and if you don’t have a good
fitting screwdriver, you could ruin the screw head.

Re installation is just the reverse of these steps. It may be easier access to the IAC if you remove
the whole air intake assembly, but it’s not necessary.

Article by:Cullenj76

Filed Under: I30-I35 Articles, Maxima Articles Tagged With: cars, IAC, idle air control valve, installation, Nissan

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