HEI Computer Shorting on Distributor
#1
HEI Computer Shorting on Distributor
I'm having an issue with my HEI distributor. There was a short from the main 12v wire on the distributor shaft that killed half the wiring. There wasn't power going to the distributor anymore. I invested money into a brand new American Autowire Classic Update harness for the whole car so now power is going to the distributor.
The issue I'm having now is the HEI computer isn't being grounded correctly. The power properly goes to the computer outside of the distributor but once it's put back in the distributor doesn't get power to the other side so there's no spark.
The distributor is grounded to the engine, the cap is newly replaced, and I've double checked the wiring and it is all correct.
If anyone can help that would be great!
Works outside of the distributor housing.
The issue I'm having now is the HEI computer isn't being grounded correctly. The power properly goes to the computer outside of the distributor but once it's put back in the distributor doesn't get power to the other side so there's no spark.
The distributor is grounded to the engine, the cap is newly replaced, and I've double checked the wiring and it is all correct.
If anyone can help that would be great!
Works outside of the distributor housing.
Doesn't work once screwed in.
#2
Join Date: Nov 2007
Location: Eastern PA,
Posts: 10,349
Are you referring to the spark module? This is a common failure point and I have replaced 100's of them, Is this a China knock off or something? Normally the electronica is sealed in a case and not serviceable. New modules cost less than 20 bucks stock.
https://www.gmcmi.com/wp-content/uploads/2014/05/HEI-Testing.pdf
https://www.amazon.com/Proform-66945BKC-Distributor-Tune-Up-Black/dp/B000CCFKD8
https://www.gmcmi.com/wp-content/uploads/2014/05/HEI-Testing.pdf
https://www.amazon.com/Proform-66945BKC-Distributor-Tune-Up-Black/dp/B000CCFKD8
Last edited by Gorn; 03-03-2019 at 07:20 PM.
#3
Are you referring to the spark module? This is a common failure point and I have replaced 100's of them, Is this a China knock off or something? Normally the electronica is sealed in a case and not serviceable. New modules cost less than 20 bucks stock.
https://www.gmcmi.com/wp-content/uploads/2014/05/HEI-Testing.pdf
https://www.amazon.com/Proform-66945BKC-Distributor-Tune-Up-Black/dp/B000CCFKD8
https://www.gmcmi.com/wp-content/uploads/2014/05/HEI-Testing.pdf
https://www.amazon.com/Proform-66945BKC-Distributor-Tune-Up-Black/dp/B000CCFKD8
https://www.jegs.com/i/Speedmaster/7....1006/10002/-1
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