Question about 1993 Ford Thunderbird

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Idle air control valve iac

I just need to locate it, take it off and clean it. I know usually there located near the throttle body. But i dont know what it looks like or where it is..And can i use carburetor cleaner or brake cleaner?

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Posted on Jan 02, 2017

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SOURCE: ford freestar, idle is wierd,

try a tune up

Posted on Jun 11, 2009

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SOURCE: IAC control valve. Locato\ion 2002 ford escape

If it's not idling and has problems starting, it's probably the IAC motor. It's located on the throttle body. Follow the airfilter box all the way to the engine, where the rubber flex hose attaches. The throttle body should be the first aluminum part you come to. Attached to the side you'll find small little aluminum part with a small wire harness attached. Unplug it, take the IAC motor off and clean inside with carb cleaner. This should fix the problem with the idle.

Posted on Sep 11, 2009

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SOURCE: i can't locate the IAC or idle air control valve

I.A.C sit in top on T.B.I. it's held on by two 8mm bolts, remove bolts clean surface replace gasket and reinstall sensor.

Posted on Nov 27, 2009

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SOURCE: Iac valve

The 04-08 MY F-150 do not have a IAC with throttle by wire.

The PCM operated the intake butterfly with a small stepper motor for both normal acceleration and to keep enough air in the system to allow the truck to idle correctly.

Posted on Feb 24, 2010

  • 4669 Answers

SOURCE: 2001 taurus dohc codes 171

There is a large vac line coming straight down from the throttle body that goes to the PCV system. See if it has a hole in it. It is likely sucking air.

Posted on Jul 17, 2010

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Where is the idle screw located on a 1999 Saturn need to adjust the idle..Still trying to find out why car will not stay running

There is no screw to adjust the idle , the PCM - engine computer controls the idle with the use of IAC valve , Idle air control valve ! The Base idle is set at the factory an you need not try to adjust it ! You will cause running problem an the check engine light to come on . Try cleaning the throttle plate and the idle air control passages .
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How to Clean Throttle Body and Idle Air Control IAC Valve Quick and Easy

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Where is the location of the idle air control valve in a 2004 chevy malibu?

If there are no cables coming off throttle body to control throttle there is no Idle Air Control valve. the idle is controlled electronically by the computer. If car is idling rough you can clean throttle body to correct this problem. If you do have cables to control throttle the IAC valve is located right next to throttle body attached to it. Hope this helps

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My 93 camry start in it run i have new plugs starks plugs n cap and roller but when im driving in be at a stop light it sound like it want to cut off so i have to put it n netural in it the gas stop it...

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Where is sensor located that controls idle

Hi Marla ,

It is called Idle Air Control Valve or IAC valve for short and it is located right over the throttle body near the the throttle position sensor. Use the URL i shared below , i am also uploading a image for you.



Apr 26, 2014 | 1994 Cadillac Fleetwood

1 Answer

How to clean the idle air control motor

You need to remove iac valve from the throttle body.The iac valve located on throttle body.Be careful while removing iac valve,its spring loaded, so you dont loose any spring.As the spring may jump out.You will need throttle clearer or you can use electric cleaner or brake cleaner liquid.Its easily available at local auto parts store. ------- For more details about diagrams and how to clean iac valve, click the link below:--- ---------- This should help.Thanks.Helpmech.

Oct 13, 2011 | 1999 Mazda 626

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Labored start and runs while accelerator is pressed. Shuts off immeditely if you release the accelerator.

Check to see if the IAC (idle control valve) is stuck in the bore of the throttle body. you can do this by;

remove the air snorkel from the throttle body.

locate the IAC, it will be round, sometimes silver or gold metal color, an have 4 or five wires on the connector.

You should see a passage in the throttle body near where the IAC is located. look in that passage and see if you can see the pintle of the IAC.

Use a small screwdriver and gently push the pintle of the IAC towards the IAC body. Once it is moved back try starting. Be ready to turn the engine off if the idle goes to high.

If the idle goes up tan remove the IAC (usually two torx screws). Carefully inspect the pintle. If the head looks worn replace it. If it is covered in carbon clean it with carb spray. Also clean out the passage with carb spray. Reinstall the IAC (new or used). Cycle the key a couple of times with out starting the vehicle. This will allow the pintle to move closer to the idle position. Start the vehicle.

Let me know if that works or if it doesn't. I'll be happy to help you further if needed.

Sep 03, 2011 | 1999 Jeep Grand Cherokee

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I have the idle control air valve but dont know where to locate it on theengine

The Idle Air Control IAC, is normally located in the throttle body along with the Throttle Position Sensor TPS. The throttle body houses the throttle plate which either has a cable or electric motor that responds to the gas pedal. It is located at the end of the air cleaner/air inlet sytem. Year and type of vehicle would help to better answer.

Jan 27, 2011 | Dodge Ram 1500 Cars & Trucks

1 Answer

Diagnostics test says idle air control underspeed error? how do i fix 1999 ford explorer

change the idle air control valve.

Idle Air Control (IAC) Valve OPERATION The Idle Air Control (IAC) valve controls the engine idle speed and dashpot functions. The valve is located on the side of the throttle body. This valve allows air, determined by the Powertrain Control Module (PCM) and controlled by a duty cycle signal, to bypass the throttle plate in order to maintain the proper idle speed. Fig. 1: Typical Idle Air Control (IAC) valve which is mounted to the throttle body - cutaway view shows air bypass direction 89684g16.gif
  1. Disconnect the negative battery cable. To remove the IAC valve, first disconnect the negative battery cable, then the IAC wire harness plug 89684p03.jpg
    Next, remove the two IAC valve attaching bolts . . . 89684p04.jpg
    . . . and pull the valve from the intake manifold 89684p05.jpg

  2. Disengage the wiring harness connector from the IAC valve.
  3. Remove the two retaining screws, then remove the IAC valve and discard the old gasket. To install: When installing the valve, always discard the old gasket and install it using a new one 89684p06.jpg

  4. Clean the IAC valve mounting surface on the throttle body of old gasket material.
  5. Using a new gasket, position the IAC valve on the throttle body. Install and tighten the retaining screws to 71-106 inch lbs. (8-12 Nm).
  6. Attach the wiring harness connector to the IAC valve.
  7. Connect the negative battery cable.
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Oct 15, 2010 | 1999 Ford Explorer

1 Answer

How do i remove and clean the IAC


The Idle Air Control (IAC) valve adjusts the engine idle speed. The valve is located on the side of the throttle body. The valve is controlled by a duty cycle signal from the PCM and allows air to bypass the throttle plate in order to maintain the proper idle speed. Do NOT attempt to clean the IAC valve. Carburetor tune-up cleaners or any type of solvent cleaners will damage the internal components of the valve.
The Idle Air Control (IAC) valve adjusts the engine idle speed. The valve is located on the throttle body. The valve is controlled by a duty cycle signal from the PCM and allows air to bypass the throttle plate in order to maintain the proper idle speed.
Removal & Installation

  1. Disconnect the negative battery cable.
  2. Detach the IAC solenoid connector.
  3. Remove the two retaining bolts and remove the IAC solenoid and gasket from the throttle body.
  4. Installation is the reverse of the removal procedure. Use a new gasket and tighten the retaining bolts to 71-97 inch lbs. (8-11 Nm).

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the MAF sensor is between the air filter and throttle body. the idle controll is at the throttle body.  Its located on the throttle body on the left side. Follow the air intake to an intake manifold which sits on top of the throttle body. 

Jan 05, 2009 | 2007 Toyota Camry

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