Coil failure

[Jarodlorenson]

I am repeatedly having to replace my #2 coil every couple months. I have tried different brands and replaced the plug and wire. The truck is a 2004 Silverado 5.3. What are some other causes for that specific coil to fail over and over?

[Jsdirt]

Lean fuel mixtures (every engine today ...), heat, high compression, high secondary resistance (a half-broken conductor in the short wire section) and large plug gaps, are all coil killers. Today's engines are super tough on them.

 

That said, the aftermarket is LOADED with junk today. Brand is important. If you can return the coil, keep doing it until you get one that works, or change brands.

[Duelin]

Switch one of the coils from another position into the number 2 cyl. And put the new coil into that other position. That way you can tell if it is the after market coils are the problem. Or that you do have a problem with number 2.

[Jarodlorenson]

I have swapped the coils and I have tried many types of coils. Some lasted longer than others like the one that's on there right now is an acdelco which lasted a couple months longer than the others but it still went out.

[Swimmer8366]

Check your connector?

 

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[Jarodlorenson]

Yea I checked the connector and the wiring going into the loom up too to the firewall and it all looks good.