I have a 2002 kia sedona and occacionly the car jumps while i am driving and then runs very rough...I have learned that when i shut the car off and turn it back on it seems to run normal again
Sounds like either an input or an output shaft speed sensor. In a nut shell, the transmission's shifting is controlled electronically; at a stop or very slow speed, the transmission is automatically in first gear...when these sensors 'sense' that the vehicle is travelling at a certain speed, it tells the transmission to shift into second. At the next specified speed, it shifts into third; etc. etc. What it sounds like is that one of these sensors is going bad, telling the transmission to downshift, but the other sensor is fighting that command and causing the vehicle to 'act' like it's running rough, when in reality it's probably just the transmission rapidly jumping between gears. These sensors aren't particularly cheap, but are pretty easy to replace. Start by finding a shop that will plug in a code reader for you (or do it yourself if you have one). You're looking for a code in the range of 0715 to 0723. If it reads 0715 to 0718, that's the input side. 0720 to 0723 is the output side. Good luck.
Jul 05, 2009 |
2002 Kia Sedona