2003 Ford Expedition Coils
We have a 2003 Ford Expedition with about 51K miles on (very low miles). About a month ago, the service light came on, indicating a misfire on cylinder #7; we had the coil replaced, and all was well for about a week. The service light came back on...and again, indicated a misfire on cylinder #7. We took it in to get checked out, and the brand new coil was bad. Is that normal? I've heard that these vehicles are notorious for coil problems...but I'm worried there could there be something else wrong to cause the coil to go bad? Any thoughts? Thanks!