Throttle Position Sensor??? HELP

[NISSAN_GUY_87]

In a `92 240sx Coupe KA24DE w/auto trans, what would be the symptoms of a bad throttle position sensor? I went on and ordered a replacement, but I want to be sure that is the problem. The car is overall, sluggish on acceleration, revs are not building, car is not accelerating like normal, so I crossed transmission off the list. I have been dealing with the problem for a while, but just over night it has gotten worse, possibly due to the cold. If I reset the ECU, the car runs fine for about 30minutes to an hour. If I punch the throttle in the wet, the rear tires won't even spin, it just slowly takes off. It is almost like it is in the wrong gear or something, then I thought maybe the kickdown switch is bad, so I am not even sure. If the new TPS solves the problem I will post that. If not I will be relying on a lot of help and advice I can find on here... Any help I can get is greatly appreciated...