My 2019 v6 kia sorento stumbles and hesitates under part throttle, low rpm, acceleration regardless of speed. it's more noticeable in city driving, but is present when traveling on the highway. keeping the transmission in 'sport' mode reduces the severity, but does not eliminate it. when i place the gear selector in manual mode, and lock in a higher (numerically) gear, i can duplicate the hesitation. i had my dealership reflash the logic controlling the transmission, per a tsb, but that only partially addressed the issue so it may be a combination of fuel delivery/automatic gear selection. i believe it's more of a fuel delivery problem, though. sometimes the hesitation is such that it prevents prompt acceleration, posing a safety concern. i've used various fuel system cleaners designed for gdi engines with limited success. my vehicle has 13k miles on it, and it has performed in this manner sincei bought it apx. 2k miles, and two months, ago.
I sent this to [xxx]<[xxx]> i have some records from (lev kia) i am going to share with you as soon as i get them together, in the meantime i am going to drive this 2019 kia sorento and hope on the highway it does not decide to down shift at 60 or 70 mph like it was doing, especially if a large tractor trailer is behind me. i think it would be a mess when they find out that a (serious electric problem that the manager [xxx] at lev kia told me that the vehicle has) caused the transmission to down shift, i will send those papers soon. also if there was nothing wrong with the transmission, why did they replace the first one. they told me because of a moisture problem was the cause of the internal shifting modulator valve to act up, after the transmission was replaced i had the same problem i called and was told to bring it back and leave it they had to do a program update for the transmission to correct the modulator valve. how do you correct a moisture problem in an internal modulator valve with an update? we will see what your answer to this is, there were other problems with the #1 e-brake light coming on by itself #2 the right front head lamp lower lamp going out 2 times, they had it in the shop for three days and went through the wire harness cleaned all the connectors to the lamp. i told warren rios that a lot of this happened after a heavy rain storm that something was getting wet and causing either a short or a surge or a bad ground connection, i have pictures of the e-brake light being on and the headlamp lower light out only on the right side. that's it for now i will sent the paper work soon. i am also sending a copy of this note to the attorney general's office and to kia corporate headquarters, and the better business bureau information redacted pursuant to the freedom of information act (foia), 5 u.s.c. 552(b)(6). *tr
[xxx] i have some records from (lev kia) i am going to share with you as soon as i get them together, in the meantime i am going to drive this 2019 kia sorento and hope on the highway it does not decide to down shift at 60 or 70 mph like it was doing, especially if a large tractor trailer is behind me. i think it would be a mess when they find out that a (serious electric problem that the manager warren rios at lev kia told me that the vehicle has) caused the transmission to down shift, i will send those papers soon. also if there was nothing wrong with the transmission, why did they replace the first one. they told me because of a moisture problem was the cause of the internal shifting modulator valve to act up, after the transmission was replaced i had the same problem i called and was told to bring it back and leave it they had to do a program update for the transmission to correct the modulator valve. how do you correct a moisture problem in an internal modulator valve with an update? we will see what your answer to this is, there were other problems with the #1 e-brake light coming on by itself #2 the right front head lamp lower lamp going out 2 times, they had it in the shop for three days and went through the wire harness cleaned all the connectors to the lamp. i told [xxx] that a lot of this happened after a heavy rain storm that something was getting wet and causing either a short or a surge or a bad ground connection, i have pictures of the e-brake light being on and the headlamp lower light out only on the right side. that's it for now i will sent the paper work soon. i am also sending a copy of this note to the attorney general's office and to kia corporate headquarters, and the better business bureau information redacted pursuant to the freedom of information act (foia), 5 u.s.c. 552(b)(6). *tr
Purchased new 2/22/19. reported acceleration hesitation problem to the dealer the next day. since then it has been in the dealers shop over 30 days. consistently hesitation and stumbles on acceleration. kia motor co, has denied their is an issue and vehicle is running properly according to design. kia engineers agreed there was an issue with my car but no fix available. i drove 3 different brand new sorento's with exact drivetrain and they all performed exactly as my car. almost got run over last week trying to accelerate on an interstate on ramp.
Car has problem when driving in econo mode. will hesitate when given gas in morning and at times when pulling out in traffic. note never informed about the problem before leasing of car. told by service department that is the way it was designed. may cause problems for other drivers or accidents. note by mileage was never test driven after so called fix.