I have a 1994 f150 and it sometimes drives sluggish and bucks or jerks while driveing tried everything and anything and begging to think its the ignition coil going bad or is bad could that be the problem.

 

does it have good gas? good plugs? good spark?

 

Have you tried adding fuel injector cleaner to the gas tank? Just follow the directions on the container.

 

sounds like ignition to me, however Is it worse when it is raining or humid? if so that can be an indication of the ignition system grounding out. Have you had any noticable coolant leaks lately (these can corrode electrical/kill insulation)? How old are the components to the ignition system? if they are old change them anyway. I am assumming you have either the 300 or 302, either way not hard to do. Did this problem just start randomly or after an event (accident or a repair shop etc)