throttle

Cleaning the throttle body on a fuel injected engine is one of the most effective ways of restoring idle quality, performance and fuel efficiency

Park your vehicle outside in a well-lighted, level area. Because the throttle-body cleaners are volatile, we do not recommend doing this job indoors.

Locate the throttle body under the hood in the engine compartment. Here are some hints on what to look for:

The throttle body is located between the air cleaner and the intake manifold of the engine.
Most throttle bodies are made of aluminum.
The throttle body is connected to the gas pedal of your vehicle with a linkage or flexible cable, which moves the throttle shaft when the gas pedal is depressed. (If you're having difficulty locating the throttle body, ask a helper to press the accelerator - with the engine off - so you can see the movement of the throttle shaft.)

Once you have located your vehicle's throttle body, look at how it is attached to the air-intake tubes. Sometimes throttle bodies are attached with special fasteners called Torx-head screws. If so, you will need Torx bits or Torx screwdrivers to remove these fasteners. More commonly, a flat-blade or Phillips-head screwdriver should do the trick.

There may be one or more electrical wires that connect to the throttle body. Do not disturb these; for purposes of this project, you should not need to disconnect any of these terminals.

While we always recommend that you follow all appropriate safety precautions for these DIY projects, this is even more important for this project. Do not smoke when you are working on your vehicle, wear all recommended skin and eye protection and generally be aware that you are dealing with a flammable spray cleaner.

Throttle body showing "wide open throttle" sensor on the right (Photo credit: Wikipedia)
Do it Yourself for Cleaning IACV

First locate your IACV it looks like this and on D series engines its mounted on the rear of the intake manifold near the throttle body, and on F series engines its mounuted towards the front of the car on the intake manifold near the throttle body

Second remove it, all you need to do is take the 2, 12mm bolts out, disconnect the electrical connection, and your heater lines that run to it. (note put a rag on the heater lines so it doesnt spill everywhere)

Third take some brake cleaner or carb cleaner and spray out the screen, which as you can see is very clogged on my 180K+ D15b8.

Fourth Let it dry, then reconnect your electrical connection, your heater lines, and your bolts and BAM your done.

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Cleaning Throttle Body

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Cleaning Throttle Body

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