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How does the coil wiring work on cossie loom? NOW BROKEN AGAIN!!!

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Old 03-07-2012, 07:17 PM
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rog
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Default How does the coil wiring work on cossie loom? NOW BROKEN AGAIN!!!

Started this thread in addition to the problem I'm having on my other thread where my car broke down.
Anyway.....checked for spark tonight, nothing, and I've replaced the cps and checked the phase sensor and also bypassed the pump so it ran all the time, and it still won't start, obviously due to no spark.

So, checked at the coil and it seems to be getting a live with the ignition on, and then (I think) a switched earth or positive, can't remember right, when you crank it. Checked the king lead side and there's no output.

Not sure if A-it's getting the right input

Or B the coil is fubar

Last edited by rog; 05-07-2012 at 09:10 AM.
Old 03-07-2012, 07:35 PM
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Psycho Warren
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the coil has a ignition live, and is then switched through the ignition amp to give the spark as required. the ignition amp connects the coil negative to earth so it builds charge then when it is switched off by the ecu, it generates a spark in the coil. If you are getting the right pulsing off the ignition amp but the coil isnt responding then as long as its getting power, it would be safe to assume the coil is FUBAR.
Old 03-07-2012, 07:42 PM
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wayne dowling
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I had an issue on mine where it cut out and wouldn't start again and it was the ecu found it when changing the chip because that was the last thing to replace on it
Old 03-07-2012, 08:38 PM
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Nobody local got a spare coil you can borrow?
Have you checked the resistance of the the primary and secondary windings? Or try connecting a live and brush the negative side to earth and see if you get a spark then. It's rare that ignition amps fail but possible, I would try swapping out the ecu next if someone has one you can borrow.
Also worth checking the chip is properly seated I suppose.
Old 03-07-2012, 08:44 PM
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Turbosystems
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the std factory fitted ford alarm cuts spark and does give problems
Old 03-07-2012, 09:24 PM
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Cheers, yeah tried another coil 5 mins ago, same deal!
Also tried messing with the alarm, no joy, going to leave it till tomorrow and see what's what, seems like an alarm/ecu issue I agree!
Old 03-07-2012, 09:36 PM
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www.bigturbo.co.uk

This might help for wiring

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Old 04-07-2012, 09:00 AM
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rog
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Thanks, i've had a "butchers" at that site a few times over the years, it's probably the best/simplest source of info there is on the weber system. However i am now focusing on the coil wiring and the ignition amp for today anyway.

To recap:
CPS is changed
Coil changed
Phase sensor checked (looks like new)
Rotor arm and cap checked

Coil is getting a voltage input of sorts, ignition live then I think a switched positive but no negative (from what I saw last night) need to confirm again.
Old 04-07-2012, 09:13 AM
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Turbosystems
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the std ford alarm is on the o/s A pillar
it cuts the trigger signal from the ecu to ignition amp
Old 04-07-2012, 09:24 AM
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Originally Posted by Turbosystems
the std ford alarm is on the o/s A pillar
it cuts the trigger signal from the ecu to ignition amp
Cheers buddy, how do i/or can i bypass this? Testiment to old wiring, most of the car is new but the wiring is original.
Old 04-07-2012, 09:37 AM
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alo
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Originally Posted by rog
Thanks, i've had a "butchers" at that site a few times over the years, it's probably the best/simplest source of info there is on the weber system. However i am now focusing on the coil wiring and the ignition amp for today anyway.

To recap:
CPS is changed
Coil changed
Phase sensor checked (looks like new)
Rotor arm and cap checked

Coil is getting a voltage input of sorts, ignition live then I think a switched positive but no negative (from what I saw last night) need to confirm again.
Phase sensor looks like new?
Doesn't mean its working......
Old 04-07-2012, 09:59 AM
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rog
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Originally Posted by alo
Phase sensor looks like new?
Doesn't mean its working......
Yes but typically when they break it's because they are old and the wires corrode and break, true that it could be defective but unlikely given the wires are in excellent nick.
Old 04-07-2012, 10:26 AM
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Have you tried the amplifier Rog? They are a quite common failure point in this sudden stop scenario.
Old 04-07-2012, 10:40 AM
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Originally Posted by Stu @ M Developments
Have you tried the amplifier Rog? They are a quite common failure point in this sudden stop scenario.
No not yet mate, it's on my list of things to check though, I had a spare one but I've got so many bits I've lost the bugger somewhere!
But you are right, given it'll take 5 mins to swap it's worthwhile doing to avoid lots of endless fault finding that could take a long time! i'm lucky that the bits I have changed so far haven't cost me anything so lets hope I can find the spare amp and it works! It was brand new in the box too I've had it for years!
Old 04-07-2012, 12:14 PM
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The alarm bypass is quite simple to pin out, ****** **** **** ***** ***** ***** **** *****, you can pin them out from the coil wiring iirc.

Last edited by Turbosystems; 04-07-2012 at 01:58 PM.
Old 04-07-2012, 01:16 PM
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Thanks, i now have an Ignition amp to try when I get home so that'll be getting done first. Regards the alarm, I will look into tht a bit more and try that too.
Old 04-07-2012, 01:40 PM
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good luck I am having some problems with my one not starting at the moment I think it is the immobiliser but could be wrong! i have traced the lack of power back from the fuel pump to the ignition relay and and am yet to find it! C'est la vie! It will just take more time!
Old 04-07-2012, 01:55 PM
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Thanks I hope you get it fixed! I found this old thread but I cannot see a pic when i click on the link that someone has posted, anyone else have a clue?

https://passionford.com/forum/ford-s...x4-cossie.html
Old 04-07-2012, 01:57 PM
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Originally Posted by James @ M Developments.
The alarm bypass is quite simple to pin out, **************** ******** ***** ********, you can pin them out from the coil wiring iirc.
James I was avoiding posting on a public forum how to by pass the ford alarm you numpty
Old 04-07-2012, 02:03 PM
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Can you PM me the details then???
Old 04-07-2012, 03:03 PM
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This is why i carry a spare set of sensors in the boot i dont suffer from cossie paranoia, honest.....
Originally Posted by Turbosystems
James I was avoiding posting on a public forum how to by pass the ford alarm you numpty


ie its the same reason the wiring diagram for the PATS isnt available from ford to the public.
Old 04-07-2012, 03:07 PM
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Originally Posted by Turbosystems
James I was avoiding posting on a public forum how to by pass the ford alarm you numpty

Why lol,

nobody uses them anymore, insurance companys wont recognise them, if they are still in place and still work 99% have a seperate aftermarket unit fitted aswell.

And me saying "you can probe them out from the coil" isnt really giving much away, i could bypass pretty much any alarm or imobilliser on the planet fitted to a cosworth by doing the same.

Nomatter how fancy or expensive the actual alarm system is, with rolling codes, and thermo nuclear protection etc etc, the cars wiring is so simple they all simply connect via a cut wire

If any car theif doesnt know that they need to head back to Liverpool for a refresher course

Last edited by James @ M Developments.; 04-07-2012 at 03:25 PM.
Old 04-07-2012, 04:00 PM
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....patiently awaits previously requested PM about the alarm details!
Old 04-07-2012, 06:11 PM
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Well it's NOT the ignition amp either, I have found the alarm box, question is WTF to do with it!!!!
Old 04-07-2012, 06:27 PM
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I keep posting check the std ford alarm on all your posts but you keep ignoring me
But what the fook do I know anyway
your like my x wife you never listen to me roflol

You have PM seeing as james is ignoring you
I have been busy putting on my mower cutting deck belt what a fookin job it's 13 feet long and double sided
think I'll stick to fixing cosworths it's easier well it is for me lol

Last edited by Turbosystems; 04-07-2012 at 06:30 PM.
Old 04-07-2012, 06:53 PM
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Cheers I'll go read it now, sorry I did see your posts I was just wanting to eliminate all the other stuff first because I thought the alarm would be a big job to mess with, nothing personal I can assure you!!!
As for your mower, maybe you should buy a cow instead?
Old 04-07-2012, 06:55 PM
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Originally Posted by rog
Cheers I'll go read it now, sorry I did see your posts I was just wanting to eliminate all the other stuff first because I thought the alarm would be a big job to mess with, nothing personal I can assure you!!!
As for your mower, maybe you should buy a cow instead?
I had a cow
I divorced her
Old 04-07-2012, 06:59 PM
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Originally Posted by Turbosystems
James I was avoiding posting on a public forum how to by pass the ford alarm you numpty
Who the fuck in there right mind in 2012 would be owning a cossie with just a standard ford alarm?
Old 04-07-2012, 07:02 PM
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Originally Posted by Turbosystems
I had a cow
I divorced her
Fuck I just spat beer everywhere ya coont lol
Old 04-07-2012, 07:05 PM
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Originally Posted by Turbosystems
I have been busy putting on my mower cutting deck belt what a fookin job it's 13 feet long and double sided
13 feet for Ł80 ain't bad lol

Steve
Old 04-07-2012, 07:10 PM
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Originally Posted by cossie4i+
13 feet for Ł80 ain't bad lol

Steve
I got it for Ł39.99 off ebay in the end with FREEEEEEEE delivery from a bearing specialists
no free fitting though roflol

Last edited by Turbosystems; 04-07-2012 at 07:11 PM.
Old 04-07-2012, 07:26 PM
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Originally Posted by Turbosystems
I had a cow
I divorced her
This weeks top Quote
Old 04-07-2012, 07:35 PM
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I had a feeling the response would be along those lines!
Tried the alarm, no joy, but it seems as though the ecu is getting no voltage between pins 19 & 20
Old 04-07-2012, 07:46 PM
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And alas is currently running away on my drive! Thanks for the help peeps, it was the main fuse for the ecu that had blown that is beside the relays in the passenger footwell, chuffed!
Old 04-07-2012, 07:57 PM
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Nice n cheap fix
Old 04-07-2012, 08:01 PM
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Glad its sorted Rog

Steve
Old 04-07-2012, 08:03 PM
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Originally Posted by rog
And alas is currently running away on my drive! Thanks for the help peeps, it was the main fuse for the ecu that had blown that is beside the relays in the passenger footwell, chuffed!
sweet, tis nice when its an easy fix
Old 04-07-2012, 08:27 PM
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Good news - similar to mine - easy fix once found
Old 04-07-2012, 10:18 PM
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this is why i also carry a box of fuses and relays in my boot

Originally Posted by Turbosystems
I had a cow
I divorced her
you should have buried her in the foundations somewhere
Old 05-07-2012, 04:19 AM
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Nice one Rog.I always carry fuses too.


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