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Discussion Starter · #1 ·
Any ideas what would make the #5 Coil pack to keep having issues? This will be the 2nd Coil pack I have installed in a Week?? I know this is totally unusual!
I checked my DSX Flex Fuel harness but its on #3 Cylinder. I switched plug wires around also that did nothing.
Possible to have and injector issue without coding? Spark Plug or tuning issue? Why only this cylinder?
Codes read:
P2313
P0355
 

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Discussion Starter · #6 ·

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Discussion Starter · #8 ·
So I pulled 2 Plugs, they both Ohm'ed out the same. Gap was also correct. So I switched coil packs from 3 to 5 again and now I have no issues??? So guessing I have an issue somewhere in my wiring and its intermittent??
 

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Just because they "ohm out" on a bench tells you nothing about how they act in use.
An intermittent coil wire I would think would cause a miss fire code, however that could be the problem.
When the coil fails does it trip a code?
 

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Discussion Starter · #10 ·
Yes when the coil fails at whatever point it decides to, it codes. So I will drive it, see how long it takes to break down. I personally think at this point it’s a coil pack harness, wire broken or pin bent, and when I unplug and plug it gives it enough to work for a bit until it moves from driving and creates the disconnect.

Yes when the coil fails at whatever point it decides to, it codes. So I will drive it, see how long it takes to break down. I personally think at this point it’s a coil pack harness, wire broken or pin bent, and when I unplug and plug it gives it enough to work for a bit until it moves from driving and creates the disconnect.
I also moved #5 plug to a different cylinder.
 

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Yes when the coil fails at whatever point it decides to, it codes. So I will drive it, see how long it takes to break down. I personally think at this point it’s a coil pack harness, wire broken or pin bent, and when I unplug and plug it gives it enough to work for a bit until it moves from driving and creates the disconnect.
A bad/intermittant input to the coil park will not cause it to burn up.
A bad output will.
 

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Discussion Starter · #12 ·
Understood. So evidently the coil pack is fine because I switched from 5 to 3, working fine, and I switched the plug to a different cylinder. It’s good right now, that’s what leads me to believe a wire. This all started happening about a week after I got it back from shop.
 
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