1997 fordexplorer 5.0 awd #3 misfire

Question edited for clarity. Full year make model in title and mis-spelling of 'misfire'.
Question moved to sub category.

The misfire code only tell you that, unfortunately it doesn't tell you why. When swapping parts to test theories, only swap one thing, one cylinder to one cylinder and only one item, the coil, the plug or the wires, not all three. What was the make of the Crankshaft Sensor? Only buy quality OEM replacements as there is a history of bad ones from Mexico and China.

Wouldn't hurt to check the wires again. This has a neat diagram.

https://www.silveradosierra.com/threads/5-3-firing-order-cylinder-diagram.734633/

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USA car? must I GUESS?
so you have 2 coil packs. ????
called wasted park
seems you typed the displacement wrong, !!! 2.2L is 4 banger...
1 and 4 fire as a pair
2 and 3 , fire as a pair , in series

so if the spark wires open , you loose a pair,
say #1 opens, you loose #4 with it.
they are wired in series.
if one spark wire grounds out , you lose only THAT spark plug.
but why would you get the odd pack to pack cross talk.
(assumes you have the HV wired right. correct?)
the packs cant be wired up willly-nillly.
this is the 2.2L coil pack.
and IS wasted SPARK system. for sure.
and can not be mixed up
the PCM is hard coded for 1,3,4,2 firing order.
and must be wired right. did you meddle here?
if you unplug the 2 one right , this must not make the 2 on left work.
pulling 1 wire, only kills the adjacent wire. normal.
see the pairs there, at the bottom see those hiddencoil packs mail coils molded to case?
if you are wired right and you have cross talk from 1/4 to 2/3 bank
the pack is bad.

by cross talk i mean, 1;3 effect 1/4 or the reverse.

Check your coil pack. Sounds like one or two need replacing.

code says #3 cylinder misfire, check the coil pack for this cylinder to see if its got spark, bad o2 sensor will spit another code, its most likely the coil

pull the multi plug connectors off the coil pack and check the connections ,and then rub the pins with a soft lead pencil and see what happens

Check the TP sensor its common for it to be out range and will give you a misfire.

what about the coil pack? If you changed wires and plugs you should also change the coil pack which controls spark to all the plugs. Make sure you put the right wires on the right plugs.

Sitting in the drivers seat, drivers side is the Left side, passenger side is the Right side.

From the Front of the engine going towards the rear,

Right side: 1, 2, 3, and 4

Left side: 5, 6, 7, and 8.


Front of the engine, RIGHT side coil pack. Two spark plug towers in Front.
Left side is Number 5. Right side is Number 1

Front of the engine, RIGHT side coil pack. Two spark plug towers in Rear.
Left side is Number 3. Right side is Number 6.

Front of the engine, LEFT side coil pack. Two spark plug towers in Front.
Left side is Number 8. Right side is Number 4.

Front of the engine, LEFT side coil pack. Two spark plug towers in Rear.
Left side is Number 2. Right side is Number 7.

Could be a bad valve, carbon, etc... i.e. something inside the motor.

First thing to do is double check your parts. Swap the coils from one side to the other. Reset the light an drive. if it comes back as a Cyl 3 again then its probable a inside the engine if everything else outside has been replaced.

IS THIS A 99 CROWN VIC? IF SO IS IT MISFIRING? IF THIS IS THE CASE YOU MORE THAN LICKLY NEED PLUG WIRES.

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/terry_db4da071b7da3ac1