1994 Chevy Silverado floods out at a stop

I have been told that the throtle position senser was bad loooooooong time ago, or was going, how do I test it? Im a old school truck guy and computers and sensers are a learning deal for me. Ya have plumbing questions, small engines questions? How do I clean out that air senser?
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is the map senser a culprit?

Thanks again, I like this site and plan on my wisdom elsewhere !