Ford crown vic sputters on acceleration and stalls when turning
Strange gun powder smell inside only accelerates if "goosed"

https://www.askmehelpdesk.com/cars-trucks/when-asking-about-your-vehicle-303903.html

2004 Crown Vic PI 4.3v8

Replace the platinum spark plugs (Motorcraft only), if they have not been replaced in 50,000 miles.