1995 Buick Skylark Car starts but will not stay running

[quote:ca49840e60="skylark2007"]Engine problem
1995 Buick Skylark Engine Size unknown Front Wheel Drive Automatic 150000 miles
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When i start the car it will only run when i step on the gas but as soon as i let off the car shuts off. i changed the spark plugs and that didn't help any. what should i do?[/quote:ca49840e60]

clean throttle body and air way
and idle air valve
check for vacuum leaks

to answer your PM
why did you try the above and didnt work
let me know