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2005 Kia Sorento 2wd 5 speed 3.5 liter

Alright, I’ve cleaned the MAF censor, I’ve cleaned the IAC censor, New spark plugs, and sprayed carb/choke cleaner on all vacuum lines while running looking for a leak.

What it’s doing... Runs at a lower idle than normal, but still runs good. I get hesitation while accelerating thru 2nd to 5th gear. It’s my wife’s car so she baby’s it and it was running much worse before I started driving it to figure it out. I have been driving it really really hard to see if it just needed cleaned out at high RPM’s if I ease into the throttle it runs really good but when I merge onto the freeway at high speed it hesitates and stumbles.
Any help on this would be very great full. Thanks
 

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99 Kia Elan 1.8L, 17 Ford Edge Sport 2.7L V6, 15 Mustang 3.7L V6, 08 Harley Nightrain
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2005 Kia Sorento 2wd 5 speed 3.5 liter

Alright, I’ve cleaned the MAF censor, I’ve cleaned the IAC censor, New spark plugs, and sprayed carb/choke cleaner on all vacuum lines while running looking for a leak.

What it’s doing... Runs at a lower idle than normal, but still runs good. I get hesitation while accelerating thru 2nd to 5th gear. It’s my wife’s car so she baby’s it and it was running much worse before I started driving it to figure it out. I have been driving it really really hard to see if it just needed cleaned out at high RPM’s if I ease into the throttle it runs really good but when I merge onto the freeway at high speed it hesitates and stumbles.
Any help on this would be very great full. Thanks
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09 kia spectra ex,04 Neon,04 Chry. T&C, 08 Pontiac G6 gt
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With most of these Kia's...The computer system is pretty sensitive to pop on the CEL for even slight "hiccups"...You don't report if the CEL is illuminated while driving, and the first thing to post of and having the computer scanned to retrieve any codes that would point to what is causing the problem by following the proper diagnostic steps for that code(s).
 
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