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79 Dodge b200 4x4 - no spark

  • norcal.m.anderson.anderson
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2 years 5 months ago #61377 by norcal.m.anderson.anderson
79 Dodge b200 4x4 - no spark was created by norcal.m.anderson.anderson
I have watched 1978 no spark video and voltage at coil looks normal 5v at + terminal and 1v at - terminal and within 1v of battery voltage with icu unplugged. When I try the pickup bypass test by shorting the male side of the distributor connector on the harness side with key in run position I get no spark. According to the flow chart I should focus on the icm. Is there further testing or should I just replace it?

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2 years 5 months ago #61379 by norcal.m.anderson.anderson
Replied by norcal.m.anderson.anderson on topic 79 Dodge b200 4x4 - no spark
Following the flow chart was a big help. I replaced the ICM with a spare I had and it fired right up. The flow chart will live in the van now.

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2 years 5 months ago #61408 by ScannerDanner
Replied by ScannerDanner on topic 79 Dodge b200 4x4 - no spark
I'm so sorry no one replied to you. You had this in the Welcome thread and I just moved it to the "post your repair questions here" thread.
I am glad the video and flowchart helped you! Thank you!
Don't be a parts changer!

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