How to clean a throttle body and Idle air control valve (iac)

*** PLEASE READ *** In this video demonstration, I show how to get to, remove, clean, and replace the throttle body and idle air control motor (aka IAC) on a 4.2l ford motor. This procedure is the same for any fuel injected vehicle. * * * Check out my website * * * The vans require removal of alot more stuff just to access the throttle body. 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. This means one less gasket and a lesser chance of creating a vacuum leak. The ford throttle body had a note on it that said it was not to be cleaned because the coating on the throttle blade might be damaged. Thats fine for a new car but that has to be disregarded when working on something that has some miles on it. Subscribe to my channel. * * * Definitions: * * * MAF - Mass Air Flow sensor - Monitors the amount of air the engine is intaking. IAT - Intake Air Temperature - Measures the temperature of the air the engine is intaking. IAC - Idle air control - Controls the amount of air the engine is intaking while it is idling. Throttle body - Responsible for regulating flow of air into the engine as you press the gas pedal. TPS - Throttle position sensor - Tells the computer how far you are opening the blade in the throttle body so it can add more fuel to compensate the added air. * * * Visit for more! * * * * * * Visit for more! * * * * * * Visit for more! * * *

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Quick Tip-Throttle Cleaning - EricTheCarGuy
This one goes out to BowlingBallOut who posted a question about a sticky throttle on his Saturn. It was a great question so I decided to make this video in response to it. There are many different configurations of throttle assemblies but for the most part if you have a throttle that is sticking you might be able to fix it using the procedures in this video. I am aware you may not able to purchase spray throttle cleaner in some states now but I'm sure they have some alternative available at your local parts store. One very important note here is that if you have a drive by wire throttle (DBW), then I do NOT recommend this procedure. If you perform this procedure on a DBW throttle body you may need to have the throttle reset in order to get your engine to idle or even start. I only recommend this procedure if you're trying to correct a problem with a sticking throttle. If you have idle problems, I recommend you check out this article on my website. The best place for answers to your automotive questions: BowlingBalOutl's channel Facebook: Twitter: Google+: Information on Premium Membership: Stay dirty ETCG Due to factors beyond the control of EricTheCarGuy, it cannot guarantee against unauthorized modifications of this information, or improper use of this information.  EricTheCarGuy assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. EricTheCarGuy recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video.  Due to factors beyond the control of EricTheCarGuy, no information contained in this video shall create any express or implied warranty or guarantee of any particular result.  Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not EricTheCarGuy.

Cleaning Throttle Bodies
MotorWeek's Pat Goss ( is a MotorWeek Sponsor) explains how to clean throttle bodies including on newer cars where there is no mechanical linkage to the gas pedal.

Easy Way to Check an Idle Air Control Valve
In this video I show you an easy way to check an idle air control valve.

Throttle Body Cleaning - Dirty Throttle Body Symptoms and Problems (visit my site for TONS of free auto repair info) Throttle body cleaning. Does your car idle rough, does the engine seem like it is trying to die when you are at a stop light, is the engine taking a little longer to start than normal? You might have a dirty throttle body and that is something you can repair yourself. In this video we are cleaning the throttle body on a 2005 Ford F150 pick up truck with a 4.6 V8 engine. Using just a wire brush and some throttle body cleaner made by BG, or you can use any throttle body cleaner made for throttle body service which is available at your local auto parts store. If you want to learn more about car maintenance and what you can do yourself to help save money. Visit my site link at the top. "Common Throttle Body Symptoms and Problems" What are the most common complaints I see in my auto repair shop that are related to a dirty throttle body? 1. Rough idle speed. We like to call this hunt and peck, like a chicken does when it is looking for food. The engine is trying to keep a steady idle speed but the carbon build up in the throttle body plates are not allowing it. So the engine is hunting for a steady idle speed, which causes the roughness you feel inside the vehicle. 2. Slower starts or extended starting periods. You might have to crank the engine over much longer than you used to. The engine might start and die, and you have to crank it again. These are pretty common complaints when there is a dirty throttle body issue. 3. Dies at stops. The engine is having a hard time keeping the idle speed high enough without dying. This complaint is worse with the air conditioner on, since there is more load on the engine with the A/C compressor on. A dirty throttle body will cause the engine to decrease the idle speed as the vehicle comes to a complete stop, and will eventually die. Restarting can take some time as in the extended crank complaint above. This is a common complaint and the throttle body as well as the idle speed control motor should be cleaned periodically as part of regular scheduled maintenance. I have more useful information on my website...for free, nothing to buy. Also of interest. throttle body service how to clean throttle body throttle body cleaning what is a throttle body throttle body symptoms throttle body problems throttle body cleaner clean throttle body