Purchased an '04 in mid 2005 with 30,000 mi on it. Just barely touch the accel pedal and the car would rocket from a dead stop. Horrible gas mileage. After 6 mos. the check engine light came on and the car became significantly slower and stopped downshifting when attempting to pass or speed up quickly. I know the two are connected somehow.. whats happening?
Check Engine Light - throttle problems on 2004 Kia Sorento
by calikiaowner in Riverside, CA on February 17, 2010
ANSWER by Bret Bodas , February 17, 2010
Hi, the next step is to have the diagnostic codes in the engine control module read out, these codes will help in the diagnosis of this problem.
ANSWER by Visitor , March 14, 2010
I have a 2005 sorento and had same problem. The code read throttle position sensor. I went to the dealer (dealer only part) and bought one of the great price of $116 and it took care of the problem.