Engine Performance problem
1994 Mercury Marquis V8 Front Wheel Drive Automatic 180000 miles

I Own A 1994 Mercury Grand Marquis, When I Drive It ,It Runs Sluggish, Meaning I Step On The Gas And The Car Goes Real Real Slow, Til I Get Up To 25 Then It Seems To Run Ok until i stop then its back to sluggish again, When The Engine Is Warm I Put The Car In Park And Reave The Engine Afterwords it Seems To Run Normal, I've Tried Fuel Injector Cleaner It Seems To Make The Problem Worse I Was Told By Many It Is The Fuel Injectors But I Am Not Believing It Is Any More.