C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
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Ignition Module 1978 Corvette

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Old Apr 11, 2021 | 01:59 PM
  #21  
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From: Arizona - If you don’t know CFI, STOP proliferating the myths around it...
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An ECM in a 78? What motor are you running that requires an ECM? Maybe you are referring to the HEI Module which is not an ECM. Correct terms mean everything.
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Old Apr 11, 2021 | 02:14 PM
  #22  
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Originally Posted by carriljc
It's not an ECM. It's an ignition module. Using the correct terms is important in communication. Using the search function works a lot better if you use the right word.
Noted, thank you
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Old Apr 11, 2021 | 03:58 PM
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Have you checked your pick up. They are notorious for the leads to break because of the vacuum advance. Resistance should be about 900 ohms, Try to wiggle the leads while ,measuring, That's seems to be the common denominator when you replace the module. You could be moving the leads where a good connection is made.
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Old Apr 11, 2021 | 04:37 PM
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Are you using a battery charger to start the vehicle after the winter?
If so what amperage are you using?
Are you using a battery tender when the car is sitting for months?
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Old Apr 13, 2021 | 10:23 AM
  #25  
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check out the wiring harness from HEI base up to the HEI cap, mine went out and it took a new cap/rotor/coil & ICM for me to find it...................
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