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1999 Nissan Altima Question: In park or idle it sometimes revs and then idles low

 

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ealtima, Shelby, NC, August 10, 2009, 14:48
 Rookie

Sometimes in Park or idling at a stoplight my car revs up and then down without my touching the gas, what's going on?

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  • Answer #1

    lawrenceg August 11, 2009, 16:11
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     Master

    There are several sensors that can cause this, or a vacuum leak, or an issue with the idle controls. Is the check engine light on?

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    Visitor, February 06, 2011, 05:34

    Yes

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    Visitor, March 28, 2011, 12:11

    All the time in Park or idling at a stoplight my car revs up and then down without my touching the gas, what's going on? And the check engine light is on

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  • Answer #2

    Visitor, March 28, 2011, 12:17

    Get the diagnostic codes in the engine computer checked and diagnosed.

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