Where is the idle air control valve

Vacuum leak, idle air control motor and solenoid, stuck throttle cable if equipped, throttle position sensor

Camry Idle Air Control Valve Cleaning - YouTube

? 3:50
https://www.youtube.com/watch?v=i82s4ZfR2js
Aug 23, 2009 - Uploaded by yuandrew
This is my Father's 1999 Toyota Camry with the 3.0 liter V6 (1MZ-FE) ... About every three years, the Idle Air ...

How To Clean Idle Air Control Valve And Throttle Body On ...

? 6:33
https://www.youtube.com/watch?v=aHHhRDTVWbo
Nov 10, 2013 - Uploaded by hondapartshero
How to clean 94-97 Honda Accord F22B idle air control valve. ... You don't show how to remove the two 12mm ...

It automatically opens and adjusts the amount of air into the intake to control idle when the throttle valves are closed (foot peddle not pushed). Older carbureted cars used a set screw to hold the throttle valve open a little to let air in, but your Audi throttle valves close tight when you take your foot off the throttle. If the air idle control valve is not working and sticks in the closed position the engine will not idle unless you step on the gas peddle a little. I cleaned mine up by removing it from the engine and spraying carburetor cleaner through the ports until it was clean.

P1506 - Idle Air Control (IAC) Overspeed Error This DTC is set when the PCM detects engine idle speed that is greater than the desired rpm.

• IAC circuit short to GND
• Damaged IAC valve

Disconnect IAC valve and look for little or no change in engine rpm as an indication of a stuck or damaged valve.
Ford Idle Air Control IAC valve test how to adjust minimum idle speed
Ford Idle Air Control Valve Diagnostics High Idle DTC P1506

I typically remove them to clean but they can be cleaned on the car. Get throttle body cleaner from the store and spray all over. Manually open the butterfly valve and wipe after. I would take the idle air control vavle off to clean it.

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
--- REMOVAL & INSTALLATION

1. Disconnect the negative battery cable. To remove the IAC valve, first disconnect the negative battery cable, then the IAC wire harness plug
   Next, remove the two IAC valve attaching bolts . . .
   . . . and pull the valve from the intake manifold
   
   
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
   
   
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.

OPERATION The Idle Air Control (IAC) valve controls the engine idle speed and dashpot functions. The valve is located on the throttle body on. This valve allows air to bypass the throttle plate. The amount of air is determined by the Powertrain Control Module (PCM) and controlled by a duty cycle signal. Fig. 1: Cleanable IAC valve — 5.0L engine version shown, others similar
Fig. 2: Non-cleanable IAC valve — 5.0L engine version shown, others similar
TESTING OBD-I System

1. Make sure the ignition key is OFF.
2. Disconnect the air control valve.
3. Use an ohmmeter to measure the resistance between the terminals of the valve solenoid. NOTE: Due to the diode in the solenoid, place the ohmmeter positive lead on the VPWR pin and the negative lead on the ISC pin.
   
4. If the resistance is not 7–13 ohms, replace the air control valve.

---
REMOVAL & INSTALLATION Fig. 1: Idle air control valve mounting — 4.9L engine version shown, others similar

1. Disconnect the negative battery cable.
2. Disconnect the engine wiring to the IAC sensor.
3. Remove the two retaining screws for the valve.
4. Remove the IAC valve and discard of the old gasket. Fig. 2: Disengage the idle air control solenoid electrical connection
   Fig. 3: Loosen the idle control solenoid retaining screws
   Fig. 4: Remove the idle air control solenoid from the throttle body
   To install:
   
5. Clean the area of old gasket material.
6. Using a new gasket, attach the IAC valve to the engine. Tighten the retaining screws to 71–102 inch lbs. (8–12 Nm).
7. Connect the IAC valve wiring to the unit.
8. Connect the negative battery cable.

may just need cleaning with carb cleaner.

here is 1996, oldest I have:

Section 03-14: Engine Controls, Electronic 1996 Taurus, Sable Workshop Manual
REMOVAL AND INSTALLATION Idle Air Control (IAC) Valve Removal

1. Disconnect battery ground cable (14301). Refer to Section 14-01 .
   

1. Disconnect the engine control sensor wiring (12A581) from the idle air control valve (IAC valve) (9F715) at the idle air control valve electrical connector.
   

1. Remove the two idle air control valve retaining bolts.
   

1. Remove the idle air control valve and idle air control valve gasket.
   

Installation

1. NOTE: If scraping is necessary, be careful not to damage idle air control valve gasket surfaces, or drop material into intake manifold (9424) or throttle body (9E926) (depending upon application).
   
   Clean idle air control valve gasket mating surfaces.
   

1. To install idle air control valve, reverse Removal procedure.
   

1. Tighten the idle air control valve retaining bolts to 8-12 Nm (71-106 lb-in).
   

Operation

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).

it is a fairly easy to replace the valve and its hard to say if the valve will fix your problem without a diagnosis i hope this helps





REMOVAL

1. Disconnect the battery ground cable.

1. Disconnect the idle air control valve electrical connector.

1. Remove the two bolts and remove the Idle Air Control valve (IAC valve) and gasket.

INSTALLATION

1. Follow the removal procedure in reverse order. CAUTION:

• If scraping is necessary, make sure not to damage the idle air control valve or the throttle body gasket surfaces or drop the gasket material into the throttle body.
• The idle air control valve has a sludge resistant design andmust not be cleaned, or damage to the anti-sludge coating may result.