FIXED IT!
You were absolutely correct Capri306, thanks. The idiot who owned the car before me didn't even put on a gasket on the EVP sensor to the EGR valve so there was no seal, and as a result...no vacuum inside the valve. I had to buy a new EVP sensor for $20-something dollars, and a $1 EGR gasket and my car was driving and pulling better than ever. Thanks again,
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previous name: 84stangLX
'84 Mustang 5.0 LX
my LX
'89 Mustang GT
my GT