There are several things that can cuase these conditions. There stalling on turns could be caused by a shot in the steering collum wiring but shouldn't case the lack of power. A failing torque converter clutch soleniod will cause the engine to die when coming to a stop, putting the vehcile in neutral would take the torque converter out of the equasion and the engine would restart but again should not cause a lack of power unless you also have a transmission issue.
A resrtited exhaust system or clogged catalitic converter would cause the lack of power and stalling condistion. This is checked by first visually checking the exhaust system for dents or other restrictions.
The catalitic converer over heating and glowing red is an indication of a blocked or clogged cat. If you can, disconnect the exhaust before the catalitic converter and try operating the vehicle. I of course will be very loud, but if you drive it with the exhaust separated before the converter and the drivability problems go away than there is a restirction in the exhaust. This could be the converter, the muffler or the piping.
These are just a few places to start, it could also be a fuel issue (when did you last change your fuel and air filters?), Wiring or computer issue.
Let me know,
Thursday, July 30th, 2009 AT 3:20 PM