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Not getting spark from one coil pack?

Tiny
KOOTER 35!
  • MEMBER
  • 1994 CHEVROLET CAVALIER
  • 3.1L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 132,000 MILES
However, I am getting spark from the other two. Could it be the module or bad coil pack? Replaced the coil pack with a used one but still no spark from that pack but other packs are firing.
Saturday, October 8th, 2022 AT 2:41 PM

8 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,192 POSTS
Hi,

Switch a working coil on the vehicle with the one in question to see if the problem still exists. If it does, then we have to check a few things to determine the cause of the issue. If it does change and you get spark from the number 1 coil, replace the coil. If the same thing happens, chances are it is the module.

Let me know what you find.

Take care,

Joe
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Saturday, October 8th, 2022 AT 10:16 PM
Tiny
KOOTER 35!
  • MEMBER
  • 6 POSTS
Thank you, Joe. Will do, I picked up a new coil today so we will see what happens. I always thought that if it was the module that it would affect all coil packs however, I was informed that each pack runs off of its own circuit within the module board. But yeah, I will let you know and again, thank you.
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Saturday, October 8th, 2022 AT 10:25 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,192 POSTS
Hi,

No problem whatsoever. Also, that is correct. You can have one that fails as a result of the module itself.

Let me know what you find and hang in there. We'll get it fixed.

Take care,

Joe
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Saturday, October 8th, 2022 AT 10:28 PM
Tiny
KOOTER 35!
  • MEMBER
  • 6 POSTS
I'm hopeful because these 3.1 are a pain in the a## to get too!
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Sunday, October 9th, 2022 AT 2:04 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,192 POSTS
Hi,

I saw this response from you and was wondering if you have been able to make any progress. Were you able to get spark from coil one?

Let me know.

Joe
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Sunday, October 9th, 2022 AT 8:16 PM
Tiny
KOOTER 35!
  • MEMBER
  • 6 POSTS
Going to work on it tonight after work. I will let you know.
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Monday, October 10th, 2022 AT 7:03 AM
Tiny
KOOTER 35!
  • MEMBER
  • 6 POSTS
Hey Joe, the module fixed it. Thanks for the help and I learned something along the way.
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Monday, October 10th, 2022 AT 5:24 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,192 POSTS
Hi,

You are very welcome. I'm glad to know you got it fixed. We all learn something new every day. Pick the things that benefit you. LOL

Take care of yourself and please feel free to come back anytime in the future if you have questions. You are always welcome here.

Joe
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Monday, October 10th, 2022 AT 7:41 PM

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