Another LT1 no spark.
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1st Gear
Joined: Jun 2020
Posts: 1
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Another LT1 no spark.
New member here. I have an 94 C4 with under 50k miles. The car ran fine when I put it away for winter storage, but now it wont start. No spark.
I read alot on the forums and tried to understand some of the videos. I followed the test I found on line and if I did this correctly, my B terminal for the ICM harness doesn't do anything when I crank the motor over... i read to switch your meter to ac scale and it should read 1 - 4 vac? Well i get nothing.. I have 12v at A and D on the ICM. For the opti I have 4.99V at A and B I have 12V on C, but it's that B terminal on the ICM harness.. so what does this mean? My computer is bad? Or Opti?
Thanks.
I read alot on the forums and tried to understand some of the videos. I followed the test I found on line and if I did this correctly, my B terminal for the ICM harness doesn't do anything when I crank the motor over... i read to switch your meter to ac scale and it should read 1 - 4 vac? Well i get nothing.. I have 12v at A and D on the ICM. For the opti I have 4.99V at A and B I have 12V on C, but it's that B terminal on the ICM harness.. so what does this mean? My computer is bad? Or Opti?
Thanks.
Last edited by CobraC4; Jun 29, 2020 at 09:15 AM.
