[martynogutsnoglory]

switch the old TB back and it ran good until it warmed up. same. runs normal until its hits a certain temp. then no power like it should have power. It limps around okay. Not running rough. idling okay. Seems like its firing on all it cylinders. It's not fuel because cold it's got full power. Probably not spark because it makes full power when cold. Obviously. Lack of fuel or spark or both happens. Not sure its o2. could be. It makes power when cold. Maybe not o2. Maybe it's a temp sensor? Where that located? I'll go buy both and switch them out. You said i need a special tool for the o2. If that's way expensive I'll leave it for the shop to do. Appreciate the help. thanks.