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Where is the idle air control valve located on 1999 astro

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It's integral to the throttle body

Posted on Dec 05, 2016

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How to fix surging and fast idle 1999 chev astro van


Clean the throttle /throttle plate, MAF(mass air flow sensor) (if you have one), and the idle air control motor. You can use brake clean and a toothbrush. But not on the MAF sensor. Just spray it with brake clean.

Apr 25, 2014 | 1999 Chevrolet Astro

1 Answer

What do I need to do to fix 1999 chevy astro van when put into drive it takes off or surges


If it is surging and then droping off it could be your idle air control valve.

Apr 25, 2014 | 2003 Chevrolet Astro

1 Answer

Is there anything else that controls the fuel other then ecm on 1993 Astro van


oxygen sensors
map sensor
mass air flow sensor
fuel pressure regulator
idle air control valve
throttle postion sensor
fuel injectors
egr valve
All these sensors send a signal to the ecm to regulate the air/fuel mixture.

Sep 07, 2011 | 1993 Chevrolet Astro

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

Where is the idle located on a 2001 chevy astro while in park the engine idles high for some reason could the idle be the problem


HI, This vehicles engine uses a idle air control valve commonly called abbreviated IAC. If this valve gets carbon build up around it they sometimes fail to close properly. I have also found that customers complaints of high idle tend to be vacuum leaks around the intakes of these engines. I hope this helps.

Aug 25, 2010 | Chevrolet Astro Cars & Trucks

1 Answer

Won't idle after starting


Your idle air control valve may be stuck in the closed position not allowing enough air into the engine to maintain a proper idle.

Apr 05, 2010 | 1999 Chevrolet Astro

1 Answer

How to locate idle air control valve?


It's located on the left rear of throttle body assembly. I looks like a small metal cylinder with two bolts and an oval plug with 4 prongs. Yes you can change it yourself. If you can't find it, go to your local auto parts store and have them show you a picture.

Dec 23, 2009 | 2001 Chevrolet Astro

2 Answers

Volvo S70 air control valve


where is the iac and the idle air control valve located on a volvo s70 1999

Mar 20, 2009 | 1999 Volvo S70

2 Answers

Rough idle / engine surges until power is applied


Sounds like a possible vaccume hose leak?

Feb 07, 2009 | 1997 Chevrolet Astro

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