Question about 2004 Hyundai Elantra

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Car reving up and down on its own 3 to 4 times, then sputtering and dying?

My car recently started doing this weird thing. It will ONLY SOMETIMES start reving up to 2-3 rpms and then down 3 or 4 times on its own and then sputters out and dies. This happens sometimes when I am either starting to go from park or after slowing down to a stop light or something. Also like I said it doesnt happen all the time, only about once a day, but the check engine light is not on and no codes are showing up.

Please HELP!!
(FYI- just changed timing belts, driving belts, had transmission flush, and replaced O2 sensor and speed sensor!)

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  • Red Lemon Nov 16, 2008

    Car surges when coming to stop sign. Then when proceeding forward it will stutter, sometimes dying. Occasionally around steady 35 mph engine appears to be rough, This is always random with no engine light codes,

    dealer cannot find problem only $80 diagnostic charge.

  • Anonymous Mar 12, 2014

    I will start my 1998 chrysler cirrus, while sitting in idle the oil light will come on, the engine will sputter and then the check engine light will come on right as the car shuts off. A time or two it has done this as I am driving. The oil light has also come on as I am going downhill, and sometimes uphill. Oil level is up to par. I was told it could be due to a sensor problem with the oil, but could be something else all together? Please help!

  • Anonymous Mar 13, 2014

    dies while driving, sometimes idling. has only sputtered out once, but 99% of the time it is just a clean shut off


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The previous solution to check the idle air contol is in the correct area but needs some clarification.
The idle control is accomplished by two parts: Throttle position sensor ( $35 at Autozone) and idle contol valve approx $190. I replaced the throttle position sensor about a week ago and it runs perfect
to date but am a skeptic after almost two years of dealer incompetance. I researched all the sensors and failure symptoms on the internet and the throttle position sensor failure symptoms matched mine
exactly. See _Position_Sensor

Posted on Dec 04, 2008

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I had the exact same thing happening with mine! I think it's called? Oh no i lost it! It's a belt if your looking under the hood it's on the left. I replaced all kinds of things and spent all kinds of money cause nobody knew exactly what it was untill it broke down on my halfway thru a 350 mile trip! Timing belt i'm pretty sure! Have someone to check it for wear.
Hope this helps,

Posted on Feb 05, 2009

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Check your i.a.c (idle air control ) it happened it me i changed it and all was better

Posted on Nov 22, 2008

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