Cody, please fill out your vehicles profile as completely as possible.
Here's what I found on a quick search:
Originally Posted by Que89YJ
Sputtering could be a few things. If its still bad vacuum leak like RR said; use a can of brake cleaner or starter fluid and lightly spray around the hoses and intake listening for an idle change.Tune up: plugs,cap,rotor,wires, and fuel filter and clean the throttle body. Last but not least TPS and O2 sensor. Try them in order. RR and I have the same 2.5TBI and its a little bit more of a pain to troubleshoot without the diagnostics
If it bogs down on throttle, I would check the above as Que stated first and then Search The Forums for TPS diagnostics, there are several very good posts to help you determine if the TPS is bad. What type and what tests you run depend upon Automatic or Manual trans.