My wife came in one day and said that her car takes forever to accelerate on the highway. I took it around the block and sure enough, the car is literally blowing through 1st, 2nd, and 3rd gear and shifting normal through the rest. This once peppy car is slow on onramps, when you pull out onto any major streets, HELL, its slow at ANYTIME! It wasn't always like this. By the way, its the V6, AWD, Automatic tranny. Theres another issue I'm having with the car, you'll have to find it by the question summary of "When I Turn Sharp The Car Binds"
Slow Acceleration - Shifting Too Early on 2003 Kia Sorento
by colton.pepper in Oklahoma City, OK on January 15, 2011
...it’s a transfer case or transmission issue. I also have a question by the question summary of “Slow Acceleration - Shifting Too Early.” Do you think this could be a transmission fluid/filter issue? If so/not, please let me know....