when i start my engine it will not continue idling and shut off my engine on 1996 Lexus GS300

but when i accelarate a little and hold for a minute the idling continues,what is the solution to this problem.

hope you can help me thank's a lot

Asked by for the 1996 Lexus GS300
review when last tuned up. it may be due.
rec. fuel system clean. ethanol treatment to 1 tank premium fuel.