riviera weird distributor problem

JDD030

New member
Hi. I have a 1983 Buick Riviera 3.8l turbo. Heres my problem. I wasn't getting any spark to the plugs. But if I unplug the Electronic Spark Control from the distributor it fires. Plug it back in and nothing. I have never seen this before. any ideas would be appreciated.
Thanks
 
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