I'm not sure what you are asking. It sounds like the engine runs rough when under load, which probably indicates a misfiring cylinder (or cylinders). Did the check engine lamp come on? -Lew Carite from CARite.com.

Are you sure that you are getting the ESP indicator light on the dash? I am asking you because, the power steering indicator says EPS, and they can be easily mistaken.

The ESP light will come on whenever the abs light is on, this is due to the ESP system cant operate if the abs system is not working.The first thing you will have to do is scan the computer for codes. the computer will store a code whenever it sees a problem and then turn on the light to warn you theres a problem and then shuts down the abs system, there are many auto part stores that scan check engine lights for free as far as the abs system i am not sure you will have to check. the codes will tell you what part of the system has failed. for example there may be a code like C 1201 left front wheel speed sensor, this code will tell you theres a problem with the left frt sensor, it may be the sensor or the wiring or connector but with a little testing the problem can be repaired. the only thing is the esp and the abs are shut down, the car can still be driven you just wont have the abs. good luck and i hope this is helpful.

If your vehicle is equipped with a/c

There is a belt tensioner, the tensioner is held by two 14 mm nuts. One hidden down by the block is the securing bolt (1) - the one out front (2) is used for tension adjustment. Loosen the bolt 1 and then loosen the bolt 2. The belt will become loose

Get it scanned first to be sure, its free anyway.

"we feel this will take care of the problem." - Well how would you feel if it didnt?

Check out this link http://www.autopartswarehouse.com/search/ to see what it looks like and check it under the hood. Because in Sedona it is in the bottom.

Check out this link http://www.autopartswarehouse.com/search/ to see what it looks like and check it under the hood. Because in Sedona it is in the bottom.

Do you mean this TSB?

2003 Kia Sorento Power Train Service Bulletin 311382
NHTSA: Action Number: 10037693 Service Bulletin Number: 311382

Report Date:
Jan 01, 2011 Component:
Power Train

Summary: Kia: there may be erratic shifting, shift shock, and a malfunction light on with stored trouble codes. This is caused by a problem within the transfer motor. *rm

You will notice that TSB online are just summary, if you want to obtain a full TSB report you can purpose it online or visit forums for your vehicle. All TSB's are submitted to NHTSA, as required by law, where they become a matter of public record and will also be provided to vehicle owners upon request.