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2008 Nissan Sentra Question: Whydoesmy car stall on the highway when at speed I shift from gear into neutral?

 

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msteele, 2.0L 4 Cylinder, Cincinnati, OH, January 29, 2014, 10:21
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Whenever I am driving at highway speeds and I shift into neutral (e.g. when I need to slow down), the rpms suddenly drop from around 2500-3000 to almost zero. Sometimes the engine recovers and doesn't stall, other times the engine quits cold turkey. This has happened to me more than a handful of times. I've learned to deal with it, but I'd like to know what the problem is. It doesn't matter if the weather is hot or cold. I thought it might be the Idle Air Control Valve, but now I'm not too sure.

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  • Answer #1

    pushrod January 29, 2014, 13:39
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     Master

    Check engine light on?

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    msteele, January 29, 2014, 13:41
     Rookie

    Check engine light is not on.

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    pushrod, January 29, 2014, 13:48
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     Master

    Needs to be scanned so live data can be seen. IAC is one possibility. More exist but cant guess at it.

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