A How-to thread: Removing and cleaning the IAC
Thread Starter
Senior Member
Joined: Jan 2002
Posts: 131
A How-to thread: Removing and cleaning the IAC
I just finished pulling and cleaning my IAC valve. Really easy, but a bit tricky at first glance. I originally had the problem of low idle in reverse, and this clean up seemed to do the trick. Note - this is for a 95 max.
here goes....
Tools needed:
10 and 12 mm sockets
3 inch socket extension
universal joint (swivel pivot socket thing)
12-inch rachet (a short rachet may not work - need something to apply a lot of torque to loosen the bolts
Philip's screwdriver
rag
throttle body cleaner
1. Unplug the 4 connectors from the IAC assembly. Undo the hose that connects teh 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.
Reinstallation 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.
Good luck!
here goes....
Tools needed:
10 and 12 mm sockets
3 inch socket extension
universal joint (swivel pivot socket thing)
12-inch rachet (a short rachet may not work - need something to apply a lot of torque to loosen the bolts
Philip's screwdriver
rag
throttle body cleaner
1. Unplug the 4 connectors from the IAC assembly. Undo the hose that connects teh 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.
Reinstallation 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.
Good luck!
Originally posted by Ginuwin3112
Interesting......My 99 SE-L's IAC only has 2 screws.. and one plug..i thought 95-99 engines and components were all the same??
Interesting......My 99 SE-L's IAC only has 2 screws.. and one plug..i thought 95-99 engines and components were all the same??
The EGR on '99s is electrical rather than mechanical. I haven't figured out if I can clean this yet.
-hype
Thread
Thread Starter
Forum
Replies
Last Post