Check engine light w/ hesitation

po300, po301, po453, po463, po533 & p1283 keep in mind the throttle body & pedal issue has been replaced already

P0300 and p0301 are the only codes that would affect the hesitation. When was the last time you had a tune up. I'd change the spark plugs at least and set them to the proper gap. If that engine has a distributor, I'd change that too .

What does those codes stand for... he's going to do a tune up along with what he's already done

300 is a random misfire and 301 is a misfire on cylinder #1. The other codes are EVAP and A/C issues.

Oh OK.. well he changed my ac compressor a couple months ago so that has nothing to do with it right?

You can check out http://www.obd-codes.com/trouble_codes/ and see what they all mean. Google is your friend too.