Cylinder 3 misfire

[FMCI]

I’m having a bit of a problem here with a misfire on cylinder three. I went ahead and replaced all the spark plugs and I also replaced the coil pack on cylinder 3. The car ran great again for two days then the problem came right back with Cylinder three. Not sure what’s up with it now. Any suggestions?

Thanks.

[03Merc]

Could be injector, You need to run a cylinder contribution test on a professional scan tool.


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[FMCI]

Alright so I just took the spark plug back out and it still looks brand new so I decided to put the old coil pack back on to see what happens and so far it’s eliminated the misfire and it’s running smoothly again. My guess is the new coil pack I bought was faulty.
keeping my fingers crossed the problem doesn’t come back.

[03Merc]

Alright so I just took the spark plug back out and it still looks brand new so I decided to put the old coil pack back on to see what happens and so far it’s eliminated the misfire and it’s running smoothly again. My guess is the new coil pack I bought was faulty.
keeping my fingers crossed the problem doesn’t come back.

It could be injector, coil, or plug that causes a mis. Or a wiring issue.


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[blazen71]

Only use OEM Ford COP's

[FMCI]

So now the marauder is throwing a P0325 code after figuring out the misfire and clearing that up.
I’ve been looking all over the web for the location of the knock sensor but can’t seem to find it.

Would anyone be able to point me in the right direction to locate it?

Thanks.

[03Merc]

So now the marauder is throwing a P0325 code after figuring out the misfire and clearing that up.
I’ve been looking all over the web for the location of the knock sensor but can’t seem to find it.

Would anyone be able to point me in the right direction to locate it?

Thanks.

Knock sensor is under the lower intake manifold in the valley of the engine block. Check the harness to make sure it's not burnt or torn. May have to remove upper and lower wiper cowls.


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