Question about 2001 Hyundai Sonata

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Engine will not idle down

In fact will climb a hill without pressing on gas ( 2000 rpms ) when stopped at a light idles at 1500 rpm normally i should be idling at 750 rpm when you remove foot from brake car takes off.

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  • lambo_7 May 23, 2008

    sorry 2001 sonata

  • lambo_7 May 23, 2008

    sorry 2001 sonata

  • mikey2009 May 31, 2008

    engine will rev up all by itself while driving down the road

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Hi have a nice day!
Your model is equipped with Vehicle Speed Sensor System.
I think it would be better to take it to an authorized service station to check it's operation.

Posted on May 25, 2008

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1 Answer

RPM's go high when driving but then go back to normal


What you are describing sounds normal. RPM's stand for revolutions per minute. Each minute your engine is running, the pistons are going up and down. When you are not going anywhere, your engine is idling and so the RPM's should NOT be very high. However, when you race up a hill, your RPM's SHOULD be high because your engine has to work hard to climb the hill or to go fast.
Idle speed= 650 Revolutions Per Minute. That means your engine cylinders each work 650 times in One minute.
At freeway speeds, your engine will revolve somewhere between 1600 and 2100 times per minute. I hope that helps.

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