i have a 94 4.6 lx. When i take off it has some kinda off wierd jerking feeling and a power loss,going down the road it jerks a little like the motor is losing power. I don't think it is the transmission becasue it does it siting in park revving the engine. If anyone can tell me whats wrong please do.

Try Changing the fuel filter, Remember there are two fuel filters on the 94 t-bird

If changing the fuel filters doesn't work try checking your timing and idle speed. I have a 1984 with the 5.0L in it and I found that my idle speed was 200rpms lower than normal and my timing was a little off. Try some fuel injector cleaner too, even if that's not the problem it couldn't hurt to clean them out.