2001 Ford Windstar The car is missing on the number 1 cylin

Try switching coil see if it makes a different

Misfire in a particular cylinder-should lead you to check the sparkplug, compression and injector for that cylinder-

Misfires can be caused by worn or fouled spark plugs, a weak spark (weak coil, bad spark plug wire), loss of compression, vacuum leaks, anything that causes an unusually lean fuel mixture (lean misfire), an EGR valve that is stuck open, dirty fuel injectors, low fuel pressure, or even bad fuel.