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truck missing once an in while had one coil go bad made b be another one but check engine light is not on
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Most shops charge one hour of labor to diagnose drivebility issues. Even though the light isn't on, there may be misfire info stored in the computer. We usually recommend replacing all coils if it has more than 100,000 miles on it. Use only Motorcraft coils. The other brands, especially the chinese coils are junk.