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MrGrumpy
Ok folks, Driving to work yesterday morning and the EML came on :( when i got to work i tried resetting it using the dash trick and it was still there.

When i finished work and started the car, there was no light :blink:
I plugged my fault code reader in when i got home from work this evening and its given me this code

P2300

i have searched the internet and I gathered that it has something to do with the wiring between the ECU and Coil pack.
I had a look and everything seems ok, so im not sure what to do.

anybody else had this problem or can someone point me in the right direction to fix this?

any help is appreciated

TIA Tom
artscot79
needs a n ew coil pack then if the wiring is okay avoid driving as the misfire can damage the cat for a genuine coil pack you have these http://www.ebay.co.uk/itm/FORD-FOCUS-MK2-1-6-2004-IGNITION-COIL-PACK-1119835-/250905557797?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item3a6b22fb25

used them for my mk1 and had no issues or theres the bosch ones which are oem http://www.ebay.co.uk/itm/FORD-FOCUS-MK2-1-4-1-6-16V-IGNITION-COIL-PACK-2004-GENUINE-BOSCH-/230768124980?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item35bada2434
MrGrumpy
Thanks, Im gonna give the plugs a clean, I think i know why its messing up, I let it run low on petrol. so i guess that it has brought a load of crap up from the tank causing it to chuck up a code.. had no misfiring though.
artscot79
7 out of 10 cars that ive done with that code had either faulty ht leads or a coil pack that code refers to the signal between the coil pack and ecu so fuel wont do anything and the misfire may be slight and at higher speeds but its always plugs leads or coil good luck
MrGrumpy
For the life of me, I could not get the plugs out. I have the attachment but it wouldn't 'click' on, if you know what I mean. such a PITA.

I have not bought any thing as I might put it in for a service, im not sure the dealers did it before i picked it up. even though there is a stamp in the book.
raider

I know this is an old thread but I had a recent issue with this and couldn't find the information below anywhere so thought it worth posting.

 

So the engine started misfiring on my 1.6 mk2 focus zetec and it was registering fault code p2300 (no other fault codes). I was advised I needed to get a coil pack so dutifully did this and the issue went away for a couple of days, then returned.

Initially I thought, like so many, bad coil? But something didn't add up. I checked around various forums and found lots of people saying they had replaced the ignition leads and spark plugs at the same time as the coil, but I didn't want to do this only to find I continue to have the issue so decided to do a bit of investigation myself..

So I reflected on the fact that the new coil had worked for a couple of days and figured it must be something to do with whatever had been done when the coil was replaced.  So I retraced the steps for replacing a coil which led me to standing over my engine as it ticked over (lumpily) and wiggling the connector that attaches to the side of the coil.  When I wiggled it, the car almost stalled.  I tried it again - same result.  So I figured it must be something about disconnecting and reconnecting this connector that had meant the new coil had worked for a little while.

 

So I did a bit more online research and found out that its not uncommon to have issues with this wiring connector and that ford now do a pigtail for this issue.  So I contacted my local Ford dealer for a price for one but he had no idea what I was talking about. All I could find online was the US part number but he still couldn't figure out what I was asking for.

 

So I then started looking through a catalogue of connectors for the mk2 focus and about 20 pages in I found the offending item.  I then went searching online for it and managed to find an original ford one for £5.36, so I ordered it. I managed to avail myself of some wiring from another vehicles wiring loom then set about soldering the wires into the connector then connecting the new connector to my existing loom.

Once I got the old connector off it became apparent what was at fault. Clearly the previous owner had one of the pins in the connector repaired and whoever did it put the pin in upside down and as a result could not push it fully home - so it was sat back from the other two connections in the connector.

 

Now presumably the previous owner had this repair for the other common problem on a Focus in that the wires to this connector are quite tight and prone to breaking/solder breaking in the plug connector.

 

Anyway, having fitted the new connector the car has never run sweeter.

Therefore my advice to anyone who suffers this same misfire issue is, before you rush out and buy a new coil, ht leads and plugs, have a little bit of an investigation of the wiring and, in particular, this connector.  It could save you time and £££'s.

artscot79

if the plugs at fault the resulting misfires knackers the coils and leads anyway so either way a new coil pack is required im afraid leads you can sometimes get away with but yes the wiring is very tight and hardly surprising it pulls on the connectors to be honest

raider

That's what I thought initially but wonder if that's only the case if you run it for a significant period of time like that.  Once mine started to misfire I stopped using it so I didn't think it could have knackered the coil unless the previous owner had run it for a time like that.  In fact to test my theory I put the old coil back on after my repair to the connector and that seems to run fine too.  I am back on the new coil now just in case but I guess my question now is could the old coil actually be ok?  Or could it be knackered but just not exhibiting any signs?

mick85
If u have multimeter u could test primary an secondary windings of coil


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