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Ignition coils

Tiny
JDELAR13
  • MEMBER
  • 2006 FORD EXPEDITION
  • 5.4L
  • V8
  • RWD
  • AUTOMATIC
  • 167,388 MILES
Vehicle is running rough and having trouble starting. I am sure it is the coil packs judging by the corrosion. Within last week replaced spark plugs. I will replace coil packs this weekend. Question is, can bad coil packs affect the a/C from functioning properly?
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Tuesday, July 25th, 2017 AT 7:25 AM

1 Reply

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
No coils only effect engine running if A/C does not work right it may be at idle but no place else. Scan for codes and check fuel pressure with a gauge prior to replacing coils it may be something else. See link.
https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator
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Tuesday, July 25th, 2017 AT 12:34 PM

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