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1997 Ford Expedition coil packs

Tiny
BILLIE
  • MEMBER
  • 1997 FORD EXPEDITION
  • V8
  • 4WD
  • AUTOMATIC
  • 139,000 MILES
My ford expedition is giving codes ignition coil no.1 primary circuit fault, ignition coil no.2 primary circuit fault, and P1507. I have replaced both coil Packs, had new coil packs tested twice, new plugs new wires, and replaced pcm (engine computer). What should I do now? Any advice is greatly appreciated.
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Tuesday, October 13th, 2009 AT 6:40 PM

2 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,200 POSTS
Were the boots that go over the spark plugs replaced?
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Saturday, October 24th, 2009 AT 8:09 PM
Tiny
BILLIE
  • MEMBER
  • 2 POSTS
Yes they were changed, everything we've done to it we've done it properly and double checked. It's puzzling to us.
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Sunday, November 1st, 2009 AT 9:58 PM

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