Coil Pack Help
#1
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Coil Pack Help
I have a Check Engine light on and diagnosed a P0300 code. I finally got around to testing my coils and need some help telling if the packs are bad.
Pack 1 (1/4)
Secondary 5.56 K ohm
Primary 1.0-1.2 ohm
Pack 2 (2/5)
Secondary 5.73 K ohm
Primary 1.3-1.5 ohm
Pack 3 (3/6)
Secondary 5.48 ohm
Primary 0.8 ohm
Are packs one and two bad? Would these readings explain the code and stuttering during acceleration in the 2k-3k RPM range.
Thanks
Pack 1 (1/4)
Secondary 5.56 K ohm
Primary 1.0-1.2 ohm
Pack 2 (2/5)
Secondary 5.73 K ohm
Primary 1.3-1.5 ohm
Pack 3 (3/6)
Secondary 5.48 ohm
Primary 0.8 ohm
Are packs one and two bad? Would these readings explain the code and stuttering during acceleration in the 2k-3k RPM range.
Thanks
#2
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MAybe not the best way but with each of the posts, maybe just pull the wire off the plug, place it close to metal [NOT near any of the gas lines or sensors] and see if it is sparking. You will see and hear it. Don't run like that long tho.
I once had the 1/4 go bad and the 1 would not spark at all. Mine was easy tho cause it was rusted so the problem was evident before I ever started.
I once had the 1/4 go bad and the 1 would not spark at all. Mine was easy tho cause it was rusted so the problem was evident before I ever started.
#3
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Well, looking at this Tecninfo article Ignition coil troubleshooting , it looks like they might be bad. The primaries are out of spec a bit.
#5
Originally Posted by Kimbo
Will Autozone test them?
#6
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Originally Posted by Kimbo
Will Autozone test them?
You could try some junkyard coils that test within spec without spending a lot of dough.
Could also be bad plugs or wires.
#7
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Originally Posted by bill buttermore
Originally Posted by Kimbo
Will Autozone test them?
You could try some junkyard coils that test within spec without spending a lot of dough.
Could also be bad plugs or wires.
As for parts, is Autozone out too? They list a coil pack for around 25 bucks.
#9
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They are not out of 'spec'. The Techinfo article is just an average of half a dozen coils of each type.
You will never notice a difference in performance with those numbers. Not perfectly matched, and not super-ideal, but not bad either.
For P0300, clean the posts on the coils, check the resistance of the wires while a friend gently bends and lightly twists them, inspect all 6 plugs to see if it'* isolated to one or two.
If a coil were bad, it would take out two cylinders. If a post is corroded, it could be a random on one. Make sure your #5 and 6 wires aren't touching the O2 harness, and make sure no wires are arcing to ground. The best way to check that is to lightly mist the engine with water (windex bottle) at night while you idle with the lights off.
I seriously doubt the coils themselves are your problem. They are an on/off device.
You will never notice a difference in performance with those numbers. Not perfectly matched, and not super-ideal, but not bad either.
For P0300, clean the posts on the coils, check the resistance of the wires while a friend gently bends and lightly twists them, inspect all 6 plugs to see if it'* isolated to one or two.
If a coil were bad, it would take out two cylinders. If a post is corroded, it could be a random on one. Make sure your #5 and 6 wires aren't touching the O2 harness, and make sure no wires are arcing to ground. The best way to check that is to lightly mist the engine with water (windex bottle) at night while you idle with the lights off.
I seriously doubt the coils themselves are your problem. They are an on/off device.
#10
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True Car Nut
Originally Posted by willwren
They are not out of 'spec'. The Techinfo article is just an average of half a dozen coils of each type.
You will never notice a difference in performance with those numbers. Not perfectly matched, and not super-ideal, but not bad either.
You will never notice a difference in performance with those numbers. Not perfectly matched, and not super-ideal, but not bad either.