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20-01-2011, 01:49 AM
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Old Man
Join Date: Oct 2007
Posts: 44
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My 2004 Focus was in for an A service and no faults or problems were found. However on leaving the car had a miss come in under load.
When the car was returned to the Ford dealer we were told that the coil had failed and need to be replaced. $400 later the car is good with a coil and spark plugs replaced. Considering that the car did not have this problem prior to the service I am wondering what actions would cause a coil to fail like that. Running the car with a lead off a spark plug and not earthed perhaps. But I am not an auto electrician to know the answer. Ford are adamant that a coil can go at any time but I have trouble accepting that it was purely coincidence happening after they had been under the bonnet. |
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20-01-2011, 09:23 AM
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FF.Com.Au Hardcore
Join Date: Feb 2005
Location: Pit Lane
Posts: 11,867
 
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Without checking a service schedule, I think there is no tuning or coild removal as part of an A service, it is only a minor service.
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Pit Lane Performance 20 Rosella St Frankston 03 9783 8122 Authorised Streetfighter, Pcmtec , SCT & HP Tuners Tuning Agent,
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20-01-2011, 06:49 PM
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Regular Member
Join Date: Mar 2010
Location: canberra
Posts: 78
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either bad luck or more than likely they washed the engine bay down which possibly got water into the coil or around the leads may have put more load on the coil and then it pact it in hard to say though why it failed
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2010 Mondeo Zetec TDI |
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20-01-2011, 10:15 PM
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#4 | ||
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Old Man
Join Date: Oct 2007
Posts: 44
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They did wash the car. I haven't been around to check if they washed the engine bay. But that's a possibility
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23-01-2011, 03:58 PM
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Regular Member
Join Date: Apr 2005
Posts: 119
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I actually just changed my coil(after market part with after market leads) on my 03 LR focus and I have noticed that it starts better and it also idles better then before. Did have a few times when it took a couple of turns of the ignition to start the car.
So I am guessing these coils don't last long I'm afraid.
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LR Zetec 3-Door black With ST170 Suspension all round, ST170 Snorkel, K&N air filter, 2.0 Auto Air deflector, MSD Ignition coils and high amp leads. (In red adds at least 5bhp!) Also Under pulley kit. Refreshed ST170 wheels now! |
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27-01-2011, 05:16 PM
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#6 | ||
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FF.Com.Au Hardcore
Join Date: Dec 2006
Posts: 1,320
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A Service is only a minor service.
Unfortunately these things can just fail. I'd say it's an unfortunate conincidence that it happened directly after a service. |
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07-01-2012, 10:43 AM
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Starter Motor
Join Date: Sep 2009
Posts: 11
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Could this cause a pinging noise.(Failed coil)
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Sudden coil failure after service
Re: Sudden coil failure after service
Linear Mode
