It happens when the motor is hot. When it's hot it's intermitent, but it happens more than not when it's hot. Cold... doesn't really occur at all (but then again I doin't rev past 4k when it's a cold engine).

 

Replaced the Coolant Temp Sensor--No effect.
I'll be looking back at the TPS and the AFM to see if they're the cause.

 

TPS is on the way out. Cleaned it with electronics cleaner and took readings again. Re-installed no more stumble.

 

WOHOO!!!

 

Figure I should put more down of what I did to remedy the problem:

Symptoms: Bucking, Stumbling, Running Rich, Can't really get over a specific RPM, Exhausted Grounds, and are at wits end.

Fix: Step 1) Check your TPS:
Remove from car.
Attach Multimeter (I prefer Anolog, but other prefer digital) Neg Lead to Black and Brown wire (S4) and Pos Lead to Green (?I can't remember).
Move the plunger up and down slowly to see what the resistence is.
If you have max resistence when fully extended and then almost none when fully compressed and it doesn't retreat back to almost 0 connectivity then you have a functioning TPS.
If you have max resistence when fully extended and then almost none when almost fully compressed then jumps down to almost full resistence or half resistence when fully compressed you have a malfunctioning TPS (Higher ups please double check)
Step 2: Remedy:
Spray the plunger and contacts liberally with electronics cleaner.
Work the plunger up and down repeatedly and continue spraying the cleaner inside the plunger.
Step 3: Double Check:
Reattach to the Multimeter and double check to see if there's any improvement
(In my case there was a major improvement each time I did step 2)
If there's moderate improvement repeat step 2 again until desired improvement occurs.
step 4: Install:
Put back on your car.
Set TPS voltage.

Now this will not ressurect a dead TPS, but it will buy you a little time if your TPS is on the way out.