Could I have a bad throttle positoning sensor or what

Might want to check that your timing is correct. You may need a new distributer assembly or just a turn on it. Loosen the bolt that holds it down, you dont have to take it off all the way to turn it, then with your engine running slowly rotate the whole unit until you hear the engine sound its best. Dont forget to retighten the bolt when your done. Or it could just be loose and rotating on its own too. I have some links to videos showing how to put in a new one and its not hard at all. Hope this helps somewhat

My answer is for someone who doesnt have the tools they need and unable to go to a shop for what ever reason. Timing isnt too hard to set manually it just has to be exact. But if you have the tools to do it, by all means a person should use them. SO I dont disagree with using the tools or meters I think they should.