Question about Hyundai Motor 2002 Sonata

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Idling after coming back from a ride, I put it in neutral for a minute, the engine started to rev up to 3000 then down to 2000 then up to 3500 then down to 1500 as if I was doing it, but my foot was completely off the gas pedal. It happened 3-4 times between yesterday and today. Any idea? Thanks in advance

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Sounds like a Mass air flow sensor problem. It can usually be cleaned or be replaced. Is prolly 200-300 dollars so i would try to clean it first. But be VERY careful. they are very sensitive. Its prolly sonna be right past where your air filter is located. It has a wire with kinda big plug on it.

Posted on Aug 16, 2008

Thank you very much, I used a q-tip with some rubbing alcohol and it worked great, It hasn't done it since. Thanks again for saving me $275.

I just wanted to write this cause the rating is locked for me.

Posted on Aug 26, 2008

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