motor does not pull out of the throttle body easily, DO NOT force it. You can reach a
finger into the hole in the throttle body at the end of the plunger and push to assist in
removal of the IAC. The IAC motor can be broken if you are not careful.
c) Once the IAC motor is off the throttle body be careful not to drop it since that would most
likely damage it.
d) Also be careful not to lose the O-ring that fits between it and the throttle body or get any
cleaner on the O-ring that would damage it.
3. Take the throttle body outside or into a WELL ventilated area. The fumes from carb/TB
cleaner are very strong, and very flammable. It is best to do the cleaning outside. Also be
sure to wear safety glasses. Blasting spray cleaner into the cracks and crevices of the
throttle body can cause it to splash back in your face. If this happens follow the
recommendations on the container, but at the very least flush your eyes thoroughly with
running water!
4. Put the throttle body in a pan and thoroughly spray it with cleaner.
a) Open the throttle blade by hand so the entire bore of the throttle body gets cleaned.
b) Pay special attention to the IAC passage as it tends to get heavy deposits in it.
c) Use an old toothbrush on heavy deposits, but do not scrub hard. Use Q-tips as
necessary but be sure not to leave any cotton residue in the throttle body. Just a little
brushing is usually all that is necessary and the deposits will dissolve.
d) Let the cleaner soak for a minute or so then blow the throttle body out with compressed
air. Finish by removing any deposits from the cleaner with a shop rag.
5. If the throttle body is not completely clean repeat step 4.
6. Carefully clean the IAC motor plunger with carb/TB cleaner.
a) Point the plunger downward so that residue will run off into the pan instead of running
into the motor itself.
b) Use a toothbrush or Q-tips as necessary, but be careful and do not use undue force.
c) Support the plunger while cleaning by laying it along a finger (yes it's nasty and it isn't
good for your skin but you can wash your hands later and use some hand cream, and it's
cheaper than buying a new IAC stepper motor).
d) Be careful! DO NOT twist on the IAC motor shaft or you will damage it. DO NOT drop the
IAC motor or you will damage it.
REASSEMBLY
1. Before reassembling the throttle body look one more time to insure that there is no lint or
other reside left inside.
a) Blow it out thoroughly with compressed air.
b) Make sure the throttle body is dry of cleaner and moisture.
c) Remember that anything left in the throttle body is going to get pulled straight into your
engine.
2. Make sure that the mating surface where the IAC plunger seats on the throttle body is clean
and free of debris.
3. Reinstall the IAC motor on the throttle body using the original T-25 Torx screws. Make sure
that the O-ring is properly seated between the body of the IAC motor and the throttle body.
