my park avenue dies on me while driving on sidestreets and highway. Has new coils…
The car has 3800 Series 2 motor runs rough at idle, smooths out at higher exceleration (when still in park).
while running the engine sounds suffeceint but when moved into drive, it stalls.
we have replaced; sensors and spark plugs, ecm unit (but nothing has changed after all replacements)
does anyone know what is going on?