I know it's a truck forum, and this place has been greatly helpful with my Excursion. I have a 2002 Taurus with the V6 3.0L engine. I have had issues with it stalling at stop lights in the heat, seems to run fine in the cooler months. I've changed plugs and wires, battery, had alternator checked out, no codes thrown last time I had it checked. I did have an issue with a clogged cat, or was told it was a clogged cat, but did not notice any performance issues other than stalling, and yet it still stalls. I'm convinced it's something to do with the heat outside. 100 degree days in Texas suck. Could it be overheating without showing hot and without smelling hot? I'm at a loss. I want this issue fixed, love the car, just hate the dying after driving for a while in the heat. Any ideas as to where to start with this?