I have a 2002 Kia Sportage - When I stop, it feels as though my car is going to stall - idle too slow. It died once so far. Do you think it's the fuel filter? Where is the fuel fillter located on my vehicle?
Even though the fuel filter and pump are easy to replace, I would start with the IAC sensor first. It is easier to get to and is cheaper than the other two if you can find one at a wrecking yard (should be around $20). This sensor is the Idle Air Control sensor, and the computer decides how much throttle to give at idle from the readings of the sensor. If it is bad your car will idle poorly or not at all.
You can verify this two simple ways:
1. Disconnect the sensor completely and see if anything changes. If you get the same issue, then it's probably the sensor. If different then it could be fuel delivery.
2. With it all hooked up; try throttling the engine yourself at 1000-1200 rpm and see if it is smooth. If it is then it is probably the sensor. If not then could be the fuel delivery.
The sensor is under the silver and black, plastic KIA cover over the engine (4 small nuts to remove), and is center above the engine on the front side of the intake pipe. 
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If it seems to still be fuel delivery, the filter is (facing the engine from the front of the car) down to the left and toward the back attached to the fender well (Just to the right of and below the battery)
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it is running good but sometimes I slow down or stop on the red light it die but I can turn it on easily. What supposedly the cause of it
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