car surges and jolts on 2000 Hyundai Tiburon

when holding speed 40,50,60 mph car surges and jolts like its starving for gas. I've replaced plugs, wires, coil, fuel filter, mass air flow sensor and injectors. Still nothing. Any ideas?

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3 answers 1 comment
Nothing beats a scanner with live data on a test drive!
Nothing beats a scanner with live data on a test drive!
Any trouble codes?..... Check engine light on?
I checked the code and check engine light was on before I replaced a few of the parts. Check engine light is no longer on but still jolts and surges.