2005 Kia Optima Having High Rpms Had Coded Knock Sensor Came

2005 KIA OPTIMA
85,000 MILES
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my 2005 kia optima is having high RPMs..Had it coded and the knock sensor came up,it was unplugged,plugged it back in.. but still having the same problem.It also fells like it isn't shifting incorrectly. Goes threw gas fast i get maybe get 175 to a full tank.maybe 200..please help..
Dec 6, 2012 at 9:58 PM
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RASMATAZ
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Go to this walk thru link for more information: http://www.2carpros.com/articles/engine-idles-too-high
Dec 6, 2012 at 10:21 PM
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