driving along & car started bucking, engine light came on.

Hello, This sounds like an issue with fuel restriction. It is possible that your have a clogged fuel filter, failing fuel pump, or purchased a bad tank of gas. The trouble codes will likely read P030X, where X can be 0-4. Scan for codes, test for fuel pressure at the engine, and go from there. Once you pressure test, you may learn that the filter and fuel pump are a single component that must me changed at the same time.