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Old 05-07-2012, 02:40 PM   #2
AvalonJohn
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Join Date: Feb 2007
Location: Bryn Mawr, Pennsylvania
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Re: Misfiring Cylinder 4 on 2002 Merc Sable

With the lights dimming it almost sounds like relays? If you've checked battery, alternator, ignition coil, etc I'm look on the Ford Windstar Forum. Many Windstars have had this problem. I had it too with my Winnie, can't really remember if I fixed though? No longer have the van.

Good luck,

AJ
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