It could be the wire, or bad ignition coil or just your plug are not gapped. The worst case is that the ignition control module is bad, but they are all easy to change
plug gap is 0.050 for a 2001 3.4 v6 grand am
Remove the spark plug wire from your 2001 Mercury Grand Marquis. Remove the spark plug with a 5/8 deep well socket, white turning it to the left. Reverse the process to put in the new spark plug.
.035
.050 inch
The manufacturer's recommended spark plug gap is .040".
They had 2 engines available, a 2.4L 4 cylinder which would have 4 spark plugs and a 3.4L V-6 with 6 spark plugs.
follow the spark plug wire starting at the spark plug end, when you get to the other end its connected to the coil
They are under the coils.They are under the coils.
40 to 45. 40 is common.
there is a coil on each one. remove the coil and there is the plug.
If you've already replaced the spark plug wires, try removing the spark plug boot heat shield.
There are several things which could be causing the car to stall out while driving. The most common and least difficult problem is that the spark plugs may need to be changed.