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2005 Subaru Legacy 198K miles intermittent stalling starts to idle rough. Putting it in neutral and giving gas will keep it from stalling. The check engine doesn't come on and there aren't any faults.

It doesn't have an IAC valve and doesn't think it's a bad throttle valve. Cleaned the butterfly and reset the computer. Doesn't make a differance if the car is cold or warm. HELP please

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  • Subaru Master
  • 3,828 Answers

Something that wont throw a fault code
i am thinking coil and plugs
even fuel pump relay or bad fuel

engine bay picture removed
2005 subaru legacy

is yours the turbo motor .. could be turbo related2005 Subaru Legacy 198K miles intermittent stallin - 5d3dd8f7-1c47-4e37-aef4-64d2eb37db4f.jpg

Posted on Apr 16, 2017

  • 2 more comments 
  • Roberta Auwema
    Roberta Auwema Apr 16, 2017

    Not turbo. Could go a week with out acting up. At higher speeds runs great.

  • Roberta Auwema
    Roberta Auwema Apr 16, 2017

    No idea where the picture is from, not from my car

  • Roberta Auwema
    Roberta Auwema Apr 16, 2017

    Plugs look very good

  • magna buff Apr 16, 2017

    last thought is iffitted with a plastic pedal ...faulty pedal sensor

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It can be issue with IAC( idle air control valve) causing the problem.


There are many other possibilities causing these idle issues. Engine idles rough.

There are few help links with solutions to troubleshoot such idle issues.

I suggest you refer the link below and follow its troubleshooting details:------

Click the link below:-----

Ford Expedition IAC valve replacing

http://technoanswers.blogspot.com/2012/12/ford-expedition-iac-valve-replacing.html

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http://technoanswers.blogspot.com/2012/01/bad-miss-at-idle.html

-----------

Stumbling and stalling at idle after engine rebuild?

http://schematicsdiagram.blogspot.in/2012/03/stumbling-and-stalling-at-idle-after.html

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http://technoanswers.blogspot.in/2012/01/1999-ford-f-150-idles-rough-and-quits.html

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Engine stumbles coming off idle when warm?

http://repairhelpcenter.blogspot.com/2012/01/engine-stumbles-coming-off-idle-when.html

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http://schematicsdiagram.blogspot.com/2011/12/erratic-idle-on-car.html

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http://repairhelpcenter.blogspot.com/2012/10/cold-start-problem-and-vehicle-shudder.html

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http://repairhelpcenter.blogspot.com/2011/12/low-idle-when-cold-out-side.html

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http://technoanswers.blogspot.com/2012/10/gmc-sonoma-stalls-and-idles-low.html

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http://schematicsdiagram.blogspot.com/2011/12/gmc-idle-air-control-iac-valve.html

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http://repairhelpcenter.blogspot.com/2011/10/1996-camry-intermittent-engine-failure.html

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http://howtobyme.blogspot.com/2011/11/car-overheats-and-air-blows-hot-at-idle.html

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http://technoanswers.blogspot.in/2012/02/high-rpm-in-neutral-inconsistant-high.html

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These details will help.

Thanks.

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