|
Location of IAC Valve (near
intake): |
 |
| Remove coolant line and electrical connector
on the IAC |
 |
| Remove the 3 phillips head and one
tamper proof torx screw (# T-25) holding the cylindrical half of the IAC
down. Here's a good tip: use a small pair of vice grips to loosen the
screws before you put a screwdriver to them. You'll surely strip them
with the screw driver if you try to break them loose with it. I also
threw out that torx screw and put a regular phillips back in its place,
in case I need to do this again |
| Carefully remove the outer half of
the IAC valve. Be real cautious here, there are parts inside it are
spring loaded. Make note of how they are assembled and how they fit in
the half of the IAC that is still connected to the engine. |
 |
| |
Remove the small piston, spring, and other
components from the IAC Valve housing. Clean them with carburetor
cleaning spray |
| |
Clean the piston's chamber but DO NOT spray
the cleaner directly in the valve housing. Use a piece of paper towel,
or a small, soft brush to get any deposits out |
| |
Clean the other half of the IAC (the part
still on the engine), DO NOT spray the solvent directly in there either.
I used a piece of soaked paper towel here also. (There is a sensitive
thermowax in these parts that you are trying to protect) |
| |
Reassemble everything and check that the
piston moves freely. Reattach the IAC to the engine, making sure the
rubber gasket sealing the two halves of the IAC will be seated properly.
Connect the coolant and electrical lines |
| |
Start the engine and check for coolant leaks
around the hose you disconnected, and where the IAC halves seal
together. Check for proper idle speed with engine cold and hot. Idle
should be 650-750 rpm hot |
| IAC Valve removed from Car: |
 |
| Clean the piston and spring with some Gummout |
You must not spray the Gummout
inside the piston's chamber, or you will melt it if the solvent sits in
there. Just soak a paper towel with some Gummout and rub it on the
inside so that no residue is left. |
| Reinstall IAC Valve. |
Car may need its computer
reset, to do so, remove the negative battery cable and press on the
brakes for 30 seconds. Reconnect battery. For the next few miles of
driving, the car may even stall due to the computer re-learning
its idle, this is normal so don't worry. |
rear wiper