Please tell me what this is!!

[supraboy107@msn.com]

So my 2.3 milly has run into a bit of a problem. When I'm at wot, or pretty close to it. I have hesitation, if i'm on a load only though. Light throttle but reving high... Fine. It's worse when the Cars hot too. It still does it cold, just not as bad. But hot, it's horrible. I was thinking the precats or TPS? Help me out here!!!! I absolutely love my car. And just want gracie to run right. (if you didn't guess, it's "Grace Green" in colour) lol

[yel-low]

Codes?
One of your coils is on the way out.
Code will tell you which one.

[millyowner]

Did you put new spark plugs in recently? If not, they're old. If so, they're the wrong ones.