P1780 Ford - Crown Vic. Engine runs like it has a miss fire / dead cylinder

Question

Police Interceptor, year 2000-2001, 4.6 Liter
If there is a part that has to be replaced, where is the location, whet does it look like (description)
and do you have a Ford Part Number?

Answer 1

P1780 Transmission control switch

P0703 Brake pedal position switch

P1780 is for the transmision control switch or transmission control indicator lamp. and P0703 this is the brake light switch. neither one of these code are going to cause a rough idle condition.,

Ignition coil are the main cause for a cylinder misfire , , whenver there is a misfire condition it usually set a misfire code.