Ignition coils

2006 FORD EXPEDITION
167,388 MILES • 5.4L • V8 • RWD • AUTOMATIC
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JDELAR13
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  • 1 POST
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?
Jul 25, 2017 at 7:25 AM
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HMAC300
  • ✓ASE Certified Mechanic
  • 48,601 POSTS
  • ASE Certified Mechanic
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
Jul 25, 2017 at 12:34 PM
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