If you are convinced it is the dizzy...take the cap and rotor off and you will see 2 box thingys (can't think of the names for the life of me right now..lol) and you can test the voltage..I believe and see if they are working...To me I had a similar problem but it doesn't sound like spark is your problem...it sounds more like your engine is losing air (like suffercating) you might wanna check all your vacumm lines and trottle body and cable...like I said before..did you do anything to your car recently because something messed up then or is this just out of the blue??? But my opinion is that you don't have a problem with spark sounds more like the problem is related to the intake manifold area..you might also wanna check your TPS too...just some advice from me and if I'm wrong it doesn't hurt just to check and you learn on the way...good luck