P0355 Ford - ive replaced the coil on the 5 cylinder now it wants to stall when I stopped .

Question

Replaced #5 coil and #6 coil now showing a code for p0355 plugs are alittle over 2 years old. Throttle body is clean. I have no clue please help.

Answer 1

try to swap the coils with cylinder 1 or 2 and see if the code moves to the other cylinder if it does the coil will be bad