what should the resistance be on a good ign coil? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 01-23-2005, 03:24 AM   #1
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Default what should the resistance be on a good ign coil?

i going to double check my coils to see if one is bad. what should the resistance be on a good coil?
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Old 01-23-2005, 03:41 AM   #2
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Hey there ho there. If you can wait until tomorrow morning, I'll go check the resistance of my coils if you want. These are on a Series II, but the Series I and Series II that use the 3 separate coil packs have the same part #. By the way, Wells replacement coil packs are $19 each and in stock at Autozone stores.
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Old 01-23-2005, 03:50 AM   #3
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Quote:
Originally Posted by 1997_LeSabre
Hey there ho there. If you can wait until tomorrow morning, I'll go check the resistance of my coils if you want. These are on a Series II, but the Series I and Series II that use the 3 separate coil packs have the same part #. By the way, Wells replacement coil packs are $19 each and in stock at Autozone stores.
yes can you please check and see what the resistance is on your coil packs, thanks
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Old 01-23-2005, 03:59 AM   #4
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I did some quick searching online, and found that the primary resistance should be 0.34 ohms. There was not a spec listed for secondary resistance -- I'm not sure whether or not you can even measure a secondary resistance for these coils. Primary resistance should be measured from where one pin from the ignition module connects, on the bottom of the coil pack (you'll have to unbolt each pack to check this) to the corresponding top post.
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Old 01-23-2005, 10:47 AM   #5
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Look in tecinfo under yech how to. #2
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Old 01-23-2005, 12:45 PM   #6
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It'* been in Techinfo for 2 years

If you have heat related problems, that won't help you though. I've had the Techinfo way work for me once, and fail for me once (under a heat-related failure).

Z06, can you put your Bonnevilles year and trim level in your signature? We can't remember what everyone drives, and some of your questions and problems are specific to some years, and don't relate to others.
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Old 01-23-2005, 01:15 PM   #7
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Quote:
Originally Posted by 1997_LeSabre
I did some quick searching online, and found that the primary resistance should be 0.34 ohms. There was not a spec listed for secondary resistance -- I'm not sure whether or not you can even measure a secondary resistance for these coils. Primary resistance should be measured from where one pin from the ignition module connects, on the bottom of the coil pack (you'll have to unbolt each pack to check this) to the corresponding top post.
I thought the primary was between bottom female pins.
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Old 01-23-2005, 03:17 PM   #8
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Correct. Primary is bottom to bottom. Female pins.
Secondary is top to top.
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Old 01-23-2005, 04:18 PM   #9
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Aha, you guys are correct. It was very late when I was posting last night, couldn't get the gears in my head spinning fast enough.
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