Temporarily lose power during acceleration Options

[jlive]

In second, third, and fourth gear, when I'm accelerating, I seem to lose power around 3k rpm. It doesn't completely die off, but I can tell I'm not accelerating as fast as I was. After a couple hundred rpms it kicks back in. The problem seems to fall off the warmer the engine gets or the higher gear I'm in. When the engine has been running for a while the problem is a lot less noticable, but is usually still present. Any ideas? Thanks.

[jlive]

I don't think its the clutch. Its predicatable when it happens. It doesn't seem to happen in first gear, and that is where all my torque is. If it was going to slip I think it would slip there.

I also just replaced all my spark plug wires because one was intermittenly working.

The problem I have now is not like that. The hessitation is not real quick like a spark plug not firing, and the engine sound doesn't change like its miss firing. It happens for a couple seconds, and always in the same rpm range (2500 to 3000). The colder the engine the more it happens too. So I don't know what that has to do with it.