[tattoo17]

when i crank my 1998 mustang gt it runs fine while it is cold but after it gets warmed up it acts like it is missing like when a spark plug is bad. then when i stop i have to keep my foot on the gas to keep it running. i have put slick50 in it to clean everything and then to day i took out my cold air induction and cleaned everything there and it still runs bad anyone have this prolbem before i can really use the help thanks

[crazycarnut]

when was the last time you changed your fuel filter? what all mods do you have on your car? the two times i had the problem the first time my fuel pump was starting to go out and the second time my fuel filter was almost clogged.

[tattoo17]

the only mods i have done are a cold air induction and a jet chip.aslo today i smelled a sulfur smell from the tailpipes and it started running bad while it is cold to..thanks for the advice i will check that very soon