Clean the valve intake ports and the throttle-mounting surface and mating ports using carburetor cleaner. Wipe the valve ports clean with a swab and the throttle mating ports with a clean shop towel or rag. Set the clean IAC valve in place along with a new valve gasket if equipped.
- Make sure the car engine is off and quite cool before you begin.
- Locate the idle air control valve under the hood. ...
- Unscrew the idle air control valve by removing the screws that hold it to the throttle body. ...
- Clean the valve by soaking it in gasoline. ...
- Drain off the gasoline.
How do I clean the idle air control valve?
Prepare the working area 2. Locate the idle air control valve 3. Remove the filter box and the air duct 4. Disconnect the clamps that connect the air duct to the throttle body 5. Locate the passage to the idle air control valve 6. Spray the hole with throttle body cleaner 7. Reconnect all of the components
What does the idle air control valve do?
Let’s talk more about the idle air control valve and what it does. The idle air control valve has a mission to allow air to bypass your throttle plate at idle. When you press on the gas pedal, you open up the throttle plate and allow air from your air filter box to enter the engine.
Can a dirty throttle body cause a rough idle?
A dirty IAC can cause a rough idle. A dirty throttle body can harm performance and cause rough engine operation. When the throttle body or iac is removed a new gasket must be used to properly seal the connection to the intake. GM idle air motors are generally mounted on the throttle body and can be cleaned without removal from the throttle body.
How does the throttle plate work at idle?
But at idle, with the throttle plate closed, there is a bypass which is going to allow air to go from the front side of the throttle plate when the throttle plate is closed and travel to the backside of the throttle plate and come out and enter your engine.
How do you clean an IAC without removing it?
How To Clean Idle Air Control Valve Without Removing ItPrepare the working area. ... Locate the idle air control valve. ... Remove the filter box and the air duct. ... Disconnect the clamps that connect the air duct to the throttle body. ... Locate the passage to the idle air control valve. ... Spray the hole with throttle body cleaner.More items...
How do I clean my IAC valve?
2:405:51How To Fix A Car That Idles Poorly (Clean the IAC) - YouTubeYouTubeStart of suggested clipEnd of suggested clipYou want to spray some gum out some carb cleaner in here too to break up any deposits of carbon.MoreYou want to spray some gum out some carb cleaner in here too to break up any deposits of carbon.
Can you clean IAC valve with wd40?
0:191:26Throttle Body, Carb & Choke Cleaner - WD-40 Specialist Automotive RangeYouTubeStart of suggested clipEnd of suggested clipYou can safely spray throttle body carbon choke cleaner straight down the carburetor throat orMoreYou can safely spray throttle body carbon choke cleaner straight down the carburetor throat or throttle body.
Can you use brake cleaner to clean idle air control valve?
use the carb/choke cleaner... it will work fine and you have nothing to worry about either running in the engine... IF... B. You leave it apart for adequet time for all of the spray to evaporate off... C.
What is idle air control valve?
The idle air control valve has a mission to allow air to bypass your throttle plate at idle. When you press on the gas pedal, you open up the throttle plate and allow air from your air filter box to enter the engine. But at idle, with the throttle plate closed, there is a bypass which is going to allow air to go from the front side of the throttle plate when the throttle plate is closed and travel to the backside of the throttle plate and come out and enter your engine.
What happens if the idle air control valve fails?
If the valve doesn’t fail but the passage gets clogged up with carbon buildup, then you also have very poor idle. In fact, you’ll like more likely to have a very low idling car.
How to disconnect a filter box?
In order to disconnect the filter box, you will have to disconnect the clamps that are holding the filter box. Next, if your vehicle has a MAF sensor, disconnect the wiring that goes into the MAF sensor. Then, you want to remove all vacuum lines that are connected to this air duct. Make sure to remove the PCV hose that is connected to the big air duct.
Where is the hole in the throttle body?
With your throttle body exposed, you will be able to see a small ”hole” or passage that is located on the inside of the throttle body. This ”hole” or passage allows the air to bypass from the air duct into the engine when your car is idle. Inspect the hole and see if it has visible carbon build-up or something that may restrict the airflow.
Can you move throttle body plate while cleaning idle air control valve?
If you have a car that has an electronically operated throttle body plate, please make sure that you do not move the throttle body plate while cleaning the idle air control valve. The reason for this is if you touch the plate and move it around with your hand, you’re going to throw off the calibration. In order to reset that, you’re going to have to go to a dealer or a mechanic shop and that’s going to cost you money.
