Changing spark plugs on A ford Crown Victoria V-8 with coil over

If there is no spark coming from the coil, it could be the module on the side of the dist or the pickup coil inside the dist, or the coil.
The pickup tells the module when to ground the coil which makes the spark.
You may need a repair book or shop manual to get the testing procedures for each component.

Try changing the module on the base of the distributor

the spark plug socket size is 5/8"x 3/8" drive and you need a 3/8 drive 3" or 6" extension with a 3/8 drive ratchet and a spark plug gapping tool to make sure the plugs are gapped properly.the drain plug is either a 1/2" or 7/8" wrench depending if it has been replaced due to being bad.

Make: FORD
Model: LTD CROWN VICTORIA
Year: 1991
Engine: V8 - 5.0L - FI - - GAS

part Number: RS14LC
GAP: .050" (Original Equipment Manufacturer and/or Original Equipment Equivalent)

Hope this helps (remember to rate this answer).

1989 Ford Crown Victoria 5.0 liter V-8 VIN "F"



Remember rated and comment this; good luck.

Each coil mounts on top of the spark plug and is bolted down to the intake manifold with a 8mm bolt. You'll need to unplug the electrical connector to the coil, remove the 8mm bolt and pull the coil and boot up off the plug and out of the motor. You'll need a 5/8 inch spark plug socket, a ratchet and a 6 inch extension. Also a telescoping magnet with help getting the plug up out of the hole.

not only did the problem switch cylinders, it switched banks. cylinders 5&6 are on the drivers side and 4 is on the passenger side. i would recheck all wires to make sure you have the correctly installed.

cylinder locaton
2 8
dr. 8 7 6 5 7 4 coil

pass. 4 3 2 1 3 5
6 1 coil

Sorry for the delay.
I am going back to answer you unanswered question.
You haven't stated what "wiring" diagram you need; however I am assuming it is for your Engine:-Spark Plugs, Wires and Coils.

Click on the following direct Link. It has the Spark Plugs, Wires and Coils - Diagrams for your specific vehicle.


http://autorepair.about.com/library/firing_orders/bl-fo-5268.htm

That model uses a COP ignition system. That isn't cop like police interceptor, rather it stands for Coil On Plug. So instead of one coil, a distributor and 8 spark plug wires, your car has 8 separate ignition coils, one on top of each spark plug, so to replace the plugs the coils have to removed and reinstalled.

if you turn the key and the engine spins but doesnt fire try checking the timing for it to make spark at the time you need it to ,if it's out it wont catch and run or check for spark at the spark plug make sure it has spark use a dummy sparkplug in the boot and hold it on a ground and crank engine look for a blueish spark and if you have bare hands holding it you'll get a good jolt (insulated pliers)