Question about 1997 Acura RL

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Where is my IAC located? I need to replace it asap.

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Found a gr8 rescouce of info on this website:
Step by step instructions on how to clean the IAC. Not a bad site for Acura owners. Good luck on your repair!

Posted on May 08, 2009

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2000 ford explorer p1504 code on OBDII

P1504 Idle Air Control Circuit Malfunction here are possible causes IAC circuit open
VPWR to IAC solenoid open
IAC circuit short to PWR
IAC circuit short to GND
Damaged IAC valve
Damaged PCM

heres what I would check,
This code means that there is a fault in your IAC valve located near the throttlebody.

Aug 27, 2011 | 2001 Ford Mustang

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I need to know where it's located and how to take off and put on idle control switch

Disconnect the negative cable from the battery terminal...Locate the IAC valve on the side of the engine, near the intake...Remove the electric cable on the back of the IAC valve. Remove the screws that attach to the IAC valve and set them aside...
Pull the IAC out of the Cadillac DeVille and replace with new valve...Connect the IAC valve to the wire and reconnect the screws. Turn the screws so that they are completely tightened...Reconnect the negative cable to the battery and start engine to test valve.

Good luck, i hope this helps.

Jun 30, 2011 | 1999 Cadillac DeVille

1 Answer

I need a diagram of where the IAC Valve position switch is located in a 1994 mitsubishi galant


Fig. The IAC motor is usually mounted on the throttle body (click over image for zoom)

  1. Disconnect the negative battery cable.
  2. Remove the air cleaner intake hose.
  3. Remove any necessary hoses from the IAC motor.
  4. Detach the electrical connectors from the IAC motor.
  5. Remove the retaining bolts and remove the IAC from the throttle body.
  6. The installation is the reverse of removal. Replace the IAC gasket.

Hope helps (rememer to rate and commet this answer)..

May 06, 2011 | Mitsubishi Galant Cars & Trucks

1 Answer

Engine idles around 2000 rpm when in park. Dont knpow how to lowere idle speed

Sounds like your Idle Air Control (IAC) value is bad. The IAC is located on your throttle body. It has two screws that attach it and it is easy to replace (if needed). Try taking the electrical connector off of the IAC to see if this corrects the situation. If your car's idle drops to 700-800, then replace the IAC. If the idle is still high, then I would look at the throttle position sensor. Also remember that if a sensor is bad you may get a check engine light coming on. I hope this helps.

Mar 29, 2011 | 1999 Oldsmobile Intrigue

2 Answers

Starts but wont hold an idle . dies if your not on the gas pedel.runs good after you get it moving

The problem you describe could be result of a dirty of defective Idle Air Control (IAC) sensor/motor. This sensor is located on your vehicles, throttle body. The purpose of this sensor is to control the car's idle under various operating conditions including ambient temperature. In order for it to function correctly, the internal components must be clean (meaning, little or no carbon build up) and it must be undamaged. Sometimes the IAC can be cleaned; however, if this cleaning procedure is not properly done, the IAC can become damaged. This sensor is also sometimes called the "Cold Start" sensor and is located on your Throttle Body (easy to ckean and replace). A new IAC will cost $50-$100. My guess is your IAC needs to be cleaned or replaced. Good Luck!

The FixYa Team.

Jan 30, 2011 | 1995 Mercury Mystique

2 Answers

Wont start in cold weather battery good anti theft not engaged

You need to replace the ign. lock cylinder and chip key, the tiny wires have broken.

Jan 09, 2011 | 1990 Cadillac SeVille

2 Answers


The idle is electronically adjusted by the ECM with the IAC (idle air control) valve which is located in the throttle body. Then the IAC get's to dirty from carbon build up, it can cause what your experiencing
Start with cleaning the throttle body, paying attention to the IAC passageway to try to clean the IAC. If this does not fix the issues, you may have to replace the IAC if it is to dirty to clean.
Thank you for using fixya and good luck, do not use carb cleaner, the carburetor cleaner is to corrosive to the gaskets used on the throttle body's. .

May 03, 2010 | 2000 Chevrolet Silverado 1500

1 Answer

How to fix mis firing of engine that cause shaking during idling for ford escape 2003

Sounds like it could be your Idle Air Control valve (IAC). The IAC does as it sounds and controls the idle in your vehicle. When these go bad, you can either clean them with a throttle body cleaner or replace them. Most people replace them as they are normally not very expensive and relatively easy to replace. The IAC is located on the throttle body which is where the air duct hose ends as it comes out of the air filter box. It is normally held on with a couple screws and just needs to be unplugged and plug the new one in. Please, please let me know if you have any further questions. If you can't find the location of the part let me know. Also if you don't think the IAC is your problem and have addition information that could point to something else, let me know. Here is a picture of what you are looking for: 656346b.jpg
This is the IAC for the 6 cylinder engine but it is different and more expensive on the 4. Let me know if you have the 4 and need a picture of it. Thanks for rating my response and for using FixYa!

Jul 30, 2009 | 2003 Ford Escape

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