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Idle control valve - 2005 Dodge Stratus

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  • Dodge Master
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The best way to replace the idle air control is to remove the the whole throttle body housing, You may want to remove the IAC valve and clean it internally with carburotor cleaner or even brake cleaner.idle control valve - 2_23_2012_7_07_37_am.gifThe engine ECM uses the IAC to maintain the RPM at 700+- 50 RPM

Posted on Feb 23, 2012

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What is an IAC Valve


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    May 12, 2016 | 1992 Toyota Paseo

    1 Answer

    How to fix fault code P1507


    Possible causes
    - Faulty Idle Air Control (IAC) valve
    - Idle Air Control (IAC) valve harness is open or shorted
    - Idle Air Control (IAC) valve circuit poor electrical connection
    What does this mean? Tech notes
    The P1507 code means that the engine idle is out of factory specification. Sometimes the Idle Air Control (IAC) may have carbon built up. Disconnect the car battery, remove the valve, clean, re-install valve, and drive the vehicle for about 5 minutes with the headlights and A/C ON to get the idle relearned.
    If the problem persist, the IAC valve may need to be replaced.

    Read more: http://www.engine-codes.com/p1507_ford.html#ixzz3sFPyZe00

    Nov 22, 2015 | 2000 Ford Ranger SuperCab

    1 Answer

    Why does my ford taurus idle high code P1506


    The code is for the idle air control valve which controls idle speed.
    The problem could be a faulty control valve, or a vac leak which is letting in air to the intake and bypassing the control valve.

    Jan 19, 2013 | 2000 Ford Taurus

    1 Answer

    1995 4.3 blazer wont decelerate when driving it, the cable is not sticking, it idles a little high but like i said it is as if the cruise is set but it is not, is this some kind of sencer problem?


    It sounds like your Idle Control Valve is stuck. Remove the Idle Control Valve on the throttle body and clean out the holes, and clean the Idle Control Valve. If the problem persists, replace the Idle Control Valve.

    Mar 14, 2011 | 1995 Chevrolet Blazer

    1 Answer

    When i turn on the ac the idle goes low and the the car vibrates. When i turn off the ac the car stop vibrating.



    Operation

    The Idle Air Control (IAC) valve controls the amount of air that bypasses the throttle valve, which controls the engine idle speed. The IAC valve consists of windings, an armature, a return spring, and a rotary slide. The engine control module (ECM) pulses the voltage to the winding, the opposing forces on the armature by the return spring cause it to maintain a fixed position, adjusting the amount of bypass air to maintain the correct idle speed.


    Removal & Installation

    1. Turn the ignition switch to the OFF position.
    2. Disconnect the idle air control valve harness electrical connector.
    3. Using a suitable tool, remove idle air control valve.
    4. Installation is in reverse order of removal.


    Testing

    Checking Idle Air Control Valve (IAC) Triggering

    1. Check IAC valve is electrically OK.
    2. Slide up boot on the IAC valve connector.



    0900c152801c00a1.jpg enlarge_icon.gifenlarge_tooltip.gif

    Fig. IAC Connector

    1. Use scan tool 'Output Diagnostic Test Mode' function 03 to trigger the IAC valve - N71.
    2. Connect VAG 1527B voltage tester, or equivalent, between terminal 1 and engine ground (GND). Voltage tester must flash.
    3. Connect VAG 1527B voltage tester, or equivalent, between terminal 2 and battery positive voltage (B+). Voltage tester must light up.
    4. If specified results are not obtained:
      1. Connect VAG 1598/19 test box, or equivalent, to ECM harness connector.
      2. Check the wiring between harness and connector terminal 1 (in engine compartment) to test box socket D11 . Then check the wiring between harness connector terminal 2 and test box socket D9 using wiring diagram. Repair as necessary.
      3. If the wiring is okay, but triggering still does not occur, replace the ECM.
      4. If the triggering signal and the wiring are okay and the valve does not react, replace the IAC valve.


    Checking Mechanical Function
    1. Remove the idle air control (IAC) valve.
    2. Visually check the surface of the rotary slide (arrow) for signs of wear.



    0900c152801c00a2.jpg enlarge_icon.gifenlarge_tooltip.gif

    Fig. Showing the IAC Valve

    WARNING Do NOT check for ease of movement by prying on the rotary slide with a screwdriver or other tools that could cause scratching or other damage.

    1. Reconnect the IAC valve, while still removed, to the harness connector.
    2. Use scan tool 'Output Diagnostic Test Mode' function 03 to trigger IAC valve - N71.
    3. Check whether rotary slide moves freely from stop to stop.
    4. If there are signs of scoring, or if the rotary slide does not move freely in both directions, replace the IAC valve.
    5. If the IAC valve does not respond (not triggered) during the Output Diagnostic Test Mode, check triggering.

    Resistance Test
    1. Remove the idle air control valve harness connector.
    2. Use a suitable Digital Multimeter (DMM) to measure the resistance between the 2 terminals of the idle air control valve.
    3. The correct measurement should be 7-11 ohms. If not, replace the idle air control valve.


    NOTE At room temperature, the resistance value will be lower. The resistance value will be higher if the Idle Air Control (IAC) valve is measured at under-hood operating temperatures.
    1. Reconnect the idle air control valve harness connector.
    2. The idle air control valve should hum and vibrate slightly when the ignition is turned 'ON'. If not, the ECM or harness may be defective.

    Testing with VAG1551:
    1. Remove the idle air control valve harness connector.
    2. Connect the VAG 15278 LED tester to terminals 1 and 2 of the harness connector using the jumpers from VW 1594 adaptor kit.
    3. Turn ignition ON, perform steps from output DTM (Diagnostic Test Mode) to activate the IAC valve (N71) LED tester must blink.
    4. If tester does not blink, check wiring using VAG 1598 pin out box, electrical checks, step 26. Repair as necessary.
    5. If wiring is okay, replace the ECM.
    6. If LED tester blinks but the IAC valve does not operate, replace the IAC valve.

    Feb 15, 2011 | 2000 Volkswagen Jetta TDI

    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
    --- 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 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

    After sitting, hard to start, seems not to be getting fuel. you can spray starting fluid and it starts, must run at higher than normal idle for a few minutes, then will idle normally.


    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 88484g22.gif
    Fig. 2: Non-cleanable IAC valve — 5.0L engine version shown, others similar 88484g23.gif
    prev.gif next.gif 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 88484g10.gif
    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 88485p12.jpg
      Fig. 3: Loosen the idle control solenoid retaining screws 88484p08.jpg
      Fig. 4: Remove the idle air control solenoid from the throttle body 88484p09.jpg
      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.
    prev.gif next.gif

    Aug 01, 2010 | 1990 Ford Econoline

    1 Answer

    How do I replace the idle control valve in a 1998 Ford Contour LX V6?


    IDLE CONTROL VALVE: REMOVAL
    1.Disconnect the vacuum hose from the exhaust gas recirculation valve. 8adde85.gif
    2.Disconnect the idle air control valve electrical connector.e21fa1a.gif 3.Detach the idle air control valve wiring harness from the stud.
    1caf5ed.gif
    4.Remove the idle air control valve.
    • Remove the two nuts.

    8176e69.gif I hope this is concise enough for you. Please give me thumbs up to thank me. By the way did I mention this info is FREE!!!

    Feb 11, 2010 | Ford Contour Cars & Trucks

    1 Answer

    3.2 liter yamaha engine manual IAC valve How do I replace the IAC valve on this engine? Steps? I just bought a new one and I need to get it replaced. FORD 1994 Taurus SHO 3.2 liter engine YAMAHA


    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).
    33b4417.gif

    Jan 14, 2010 | 1994 Ford Taurus

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