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Old 04-29-2015, 09:58 AM   #1
ASJT3
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2008 Taurus X, misfire / SES light flashes

All,

I've got a 2008 Taurus X with 108,000 miles. Intermittently, there seems to be a misfire under light acceleration and the SES light will flash. There aren't any codes picked up by a pocket scanner and the SES light is not permanently lit, only during the miss.

From the research I've done, this problem appears to be related to the coils. The dealer we bought from last year claimed they changed the coils before it was sold, but I suspect they probably only changed the front-most (easy to get to) coils and left the rearward ones as-is.

Any way to diagnose which coils need replacement?
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2007 Tahoe SSV, 2x 1996 Buick Roadmaster Estate Collector's Edition 5.7, 1993 K1500 Silverado 350, 1989 Wrangler Sahara

Former vehicles:
1999 K1500 Suburban 350, 1991 V2500 Suburban 350, 1990 C1500 Sierra 305, 1989 C2500 Cheyenne 350, 1988 K1500 Silverado 350/SM465, 1987 Chevy Caprice Estate 307, 1969 Chevy Impala Convertible 396
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Old 05-07-2016, 10:30 AM   #2
rhandwor
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Re: 2008 Taurus X, misfire / SES light flashes

Go to Auto Zone or Advanced and get a computer scan done it should pinpoint the cylinder misfiring.
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Old 05-07-2016, 10:37 AM   #3
rhandwor
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Re: 2008 Taurus X, misfire / SES light flashes

http://www.ebay.com/ search 231666763920 The tester will show a blink if erratic you found the cylinder.
Go to Auto Zone or Advanced and get a free scan it should point to the problem cylinder.
A injector can also cause a misfire.
Get a noid light at parts store to diagnosis a a bad wire.
Put a long screwdriver to top of injector and listen.
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