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Where is IAC system on my ford Taurus - 2005 Ford Taurus

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The Idle Air Control (IAC) valve will be a solenoid mounted on the side of the throttle body. The throttle body is the butterfly valve that your throttle cable goes to. Air goes through the throttle body from your air filter.

Posted on Nov 21, 2014

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When it is cold outside my car keeps stawing


A common cause for stalling is the IAC system.
If the IAC is carboned up it will not allow enough bypass air to regulate engine idle properly.

Nov 15, 2014 | 2005 Ford Taurus SEL

1 Answer

2002 taurus 3.0L OHV stalls when hot have replaced IAC,camshaft position sensor,fuel pump and there are no codes on engine stall occurs most often when slowing and turning


If you have to wait to restart its usually a faulty coil or ignition module.
Someone would need to troubleshoot the ignition system when the engine fails to start to proceed. Could be a faulty relay too.

Sep 13, 2012 | 2002 Ford Taurus

2 Answers

Code P1506, 2002 ford taurus wagpn


P1506 Idle Air Control
Overspeed Error

IAC Valve--Bad
Vacuum Leaks
IAC Stuck Open
Failed EAVP System

Disconnect the valve--if little
or no change in RPM,then
Valve is stuck or bad

Mar 16, 2011 | 2000 Ford Taurus

1 Answer

My ford taurus SE 1999 have 3 codes P1504, P1507 and P1131


DTC Description Possible Causes Diagnostic Aides P1504 - Idle Air Control (IAC) Circuit Malfunction This DTC is set when the PCM detects an electrical load failure on the IAC output circuit.
  • IAC circuit open
  • VPWR to IAC solenoid open
  • IAC circuit short to PWR
  • IAC circuit short to GND
  • Damaged IAC valve
  • Damaged PCM
  • The IAC solenoid resistance is from 6 to 13 ohms.
    • IAC valve stuck open
    • Vacuum leaks
    • Failed EVAP system
    • Damaged PCM
  • The IAC solenoid resistance is from 6 to 13 ohms.
P1507 - Idle Air Control (IAC) Underspeed Error This DTC is set when the PCM detects engine idle speed that is less than the desired rpm.
  • IAC circuit open
  • IAC circuit short to PWR
  • VPWR to IAC solenoid open
  • Air inlet is plugged
  • Damaged IAC solenoid
  • Damaged PCM
  • The IAC solenoid resistance is from 6 to 13 ohms
  • Disconnect IAC valve and look for no change in engine rpm as an indication of a stuck or damaged valve
P1131 - Lack of HO2S-11 Switch, Sensor Indicates Lean A HEGO sensor indicating lean at the end of a test is trying to correct for an over-rich condition. The test fails when the fuel control system no longer detects switching for a calibrated amount of time.
  • Electrical:
    • Short to VPWR in harness or HO2S
    • Water in harness connector
    • Open/Shorted HO2S circuit
    • Corrosion or poor mating terminals and wiring
    • Damaged HO2S
    • Damaged PCM
  • Fuel System:
    • Excessive fuel pressure
    • Leaking/contaminated fuel injectors
    • Leaking fuel pressure regulator
    • Low fuel pressure or running out of fuel
    • Vapor recovery system
  • Induction System:
    • Air leaks after the MAF
    • Vacuum Leaks
    • PCV system
    • Improperly seated engine oil dipstick
  • EGR System:
    • Leaking gasket
    • Stuck EGR valve
    • Leaking diaphragm or EVR
  • Base Engine:
    • Oil overfill
    • Cam timing
    • Cylinder compression
    • Exhaust leaks before or near the HO2S(s)
A fuel control HO2S PID switching across 0.45 volt from 0.2 to 0.9 volt indicates a normal switching HO2S.

Mar 16, 2011 | 1999 Ford Taurus

1 Answer

My 2002 ford taurus idles high when i come to a stop. why?


The problem relates to faulty EGR or throttle position sensor.Also check the IAC vale,if its faulty replace it.That will help. Thanks.HelpMech.

Nov 12, 2010 | 2002 Ford Taurus

1 Answer

2001 taurus dohc codes 171 and 174 replaced MAF, DPFE and IAC. New plugs and wires cleaned throttle body and egr valve. Has high idle, surging on highway. Disconnect the IAC and it runs perfect,...


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.

Jul 17, 2010 | 2004 Ford Taurus

1 Answer

2002 ford taurus idle high in park and in gear.how do i adjust this problem?


sounds like you got a vacuum leak or your IAC idle air control motor is going out.my best guess to start with.

Jul 16, 2010 | 2002 Ford Taurus

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).
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Jan 14, 2010 | 1994 Ford Taurus

1 Answer

2002 ford taurus with check engine code bank 1 and 2 lean. the car idles irratically and stalls.


You most likely have a big vacuum leak. PCV hose split or a bad Idle Air Control motor (IAC)

Sep 27, 2009 | 2002 Ford Taurus

1 Answer

2006 ford tarus


replace the iac solenoid or iac motor some people call it one or the other.it's the same thing just ask for a iac

Jun 24, 2008 | 2006 Ford Taurus

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