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Focus Hesition/misfire On Motorway


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#1 focus87

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Posted 25 February 2011 - 06:22 PM

Hi, new to the site today. I have a problem with my 3 year old 1.6 duratec focus zetec with 35,000 miles on the clock. When i am on the motorway I will be cruising along at a steady 65mph and radomly feel the engine miss a beat/hesitate. This happens for a second and no warning lights. It only happens at 60-65 mph (around 3000 rpm). I use the motorway twice a day to commute to work, 14 miles each way. It has happend around 3 times in the past 4 months. Car is fine when accelerating and above/below this speed. On my last service with Ford in august they changed the spark plugs and this did seem to help but problem has returned.

Hope someone can throw some suggestions. Thanks, Steve

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#2 jeebowhite

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Posted 25 February 2011 - 06:26 PM

Last thing I heard similar to this was a colleagues VWPolo, they changed the plugs and the coil packs and that pleased the car greatly :)

#3 johnH

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Posted 25 February 2011 - 06:26 PM

if this is a diesel your approaching the 37.5k service...you might need to change your fuel filter...this can, from personal experiance, cause random faults that get worse and worse. it only costs 10 for a new filter.

#4 focus87

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Posted 25 February 2011 - 07:24 PM

Just to update, the car is petrol. I was thinking the fuel filter and also heard about HT leads and coil packs although would these really need replacing at this age and mileage? Car idles fine, isnt using excessive fuel and is fine under heavey acceleration and normal acceleration around town. Thanks for the quick replys guys

#5 jeebowhite

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Posted 25 February 2011 - 07:56 PM

My friends VW was 3.5 years old, and only 40000 on the clock so its not too uncommon unfortunately...

#6 artscot79

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Posted 25 February 2011 - 08:37 PM

My friends VW was 3.5 years old, and only 40000 on the clock so its not too uncommon unfortunately...


coil pack here http://cgi.ebay.co.u...=item5ad15d41a2

easy to change youreself and the leads are only from ford 68 quid for 4 unfortunately but the cheap ones cause misfires and uneven idling and wreck coil packs if replacing the plugs the gap is only 1.0mm not 1.3mm ford altered it aftrer it caused coil pack issues including quick failures

#7 Leemaxd

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Posted 26 February 2011 - 10:12 AM

Go for fuel filter sounds like that could be the cause.

#8 focus87

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Posted 28 February 2011 - 01:18 PM

Thanks for the info guys, car is in tommorrow and ill bring up those to potential items. At what intervals are the fluids chaged? Power steering, coolant, brake fluid.

#9 artscot79

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Posted 28 February 2011 - 01:36 PM

Thanks for the info guys, car is in tommorrow and ill bring up those to potential items. At what intervals are the fluids chaged? Power steering, coolant, brake fluid.


brake fluid 2 years power steering 2 years coolant 10 years if orange

#10 focus87

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Posted 28 February 2011 - 02:25 PM

My dealership mentioned the brake fluid at 2 years but never mentiond the power steering fluid? also what about the gearbox oil?

#11 greggp

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Posted 09 March 2011 - 05:05 PM

have a read of this thread mate. I have the 1.8 petrol (2008) version and I have noticed similar hesitation to yours. think this is normal.

http://www.fordowner...showtopic=12997

#12 sirmally2

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Posted 10 March 2011 - 11:57 AM

http://www.etis.ford.com/

try this site. it should tell you what needs doing at what interval :rolleyes:

#13 beefy505

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Posted 10 March 2011 - 12:43 PM

Had the 06 Focus 1.6 Petrol, had the same hesitation / missfire @ 60 mph, turned out to be the coil pack. Used to blow the near side headlight all the time as well.

Had the replacement replaced twice more "never heard of them breaking down like that sir and being replaced again!" yeah right!!

Chopped it in for a Fiesta Diesel with the number of miles i do a year.

#14 johnH

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Posted 10 March 2011 - 01:56 PM

more than likely a fault causing that fault if the coilpacks kept going. i went through 2 on my peugeot as the timing belt had jumped a few teeth.

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