Question about 2000 Volvo S40

3 Answers

Engine idles to low and stalls

So lately my 2000 s40 turbo, has been stalling alot and not starting when its cold. Put a new battery in. And now if I take my foot off the gas it'll stall completely, it idles under 1...

It rides good on the highway but in traffic its a pain...any suggestions?

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  • Anonymous Feb 11, 2009

    when i drive the car it races and not as powerful the power is still there but does not engage as before

  • s_b_simbad Apr 11, 2009

    i have the same poblem with my 2002 1.9 diesel. When is cold it idles not perfect but ok for 10min, after that it just cuts out itself? if you restart engine and leave it running it cuts out within 2min. Also, it revs very hard and there is no power to it as it used to be before ....



    Are there anyone amongst us who had same problem and can help????



    thank you all

  • Anonymous May 08, 2009

    Very similar problem, my car does not idle when i first start it. I have to keep my foot on the accelerator otherwise the RPM's drop to low and the motor stalls. I had a local Volvo dealer run a diagnostic (about $100 varies by shop). They said that it was the idle control valve motor.



    The car has been robbed of the torque it once had and my MPG dropped from 28 to 21. You can find the part for around $170 on the web. The extra fuel costs were significantly higher than fixing the problem.



    Prior to replacing this part I was able to manually adjust the trottle cable under the hood which helped with the car stalling. Be very careful when doing this, you can check your RPm gauge after making hte adjustment, I wouldn't adjust the throttle cable to the extent that the car idles over 1200 RPM, you'll still have to manually keep pressure on the accelerator for 2-3 minutes but after that the car should idle on it's own.



    Hope this helps. Also, I love my volvo and there's nothing like a couple bottles of Octane Boost on top of a tank of premium. These motors are built for performance, try a high flow intake filter too, you'd be amazed how a few small changes like this dramatically improves the already great driving experience.



    Have Fun, Joe.

  • Bill ferrell
    Bill ferrell Jun 14, 2014

    My s40 will only idle correctly when I remove the air filter. The filter looks new. Could it be just a bad air filter. Thanks for all the support.

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Very similar problem, my car does not idle when i first start it. I have to keep my foot on the accelerator otherwise the RPM's drop to low and the motor stalls. I had a local Volvo dealer run a diagnostic (about $100 varies by shop). They said that it was the idle control valve motor.

The car has been robbed of the torque it once had and my MPG dropped from 28 to 21. You can find the part for around $170 on the web. The extra fuel costs were significantly higher than fixing the problem.

Prior to replacing this part I was able to manually adjust the trottle cable under the hood which helped with the car stalling. Be very careful when doing this, you can check your RPm gauge after making hte adjustment, I wouldn't adjust the throttle cable to the extent that the car idles over 1200 RPM, you'll still have to manually keep pressure on the accelerator for 2-3 minutes but after that the car should idle on it's own.

Hope this helps. Also, I love my volvo and there's nothing like a couple bottles of Octane Boost on top of a tank of premium. These motors are built for performance, try a high flow intake filter too, you'd be amazed how a few small changes like this dramatically improves the already great driving experience.

Have Fun, Joe.

Posted on May 08, 2009

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I had the same problem in my s40. The problem was the idle control motor in my car but another person with those symptoms said the problem was the fuel pressure regulator. Both are cheap fixes and I'd definitely start there.

Posted on Feb 04, 2009

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I would have the throttle plate cleaned because when they get dirty they have the symptoms that you are describing

Posted on Jan 29, 2009

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