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Hi Charles -
The DME is a very simple 8051 based computer - if you're careful to avoid static build-up, it's easy to open and inspect. The coil drivers are the components that stand up on heat sinks above the circuit board. Look at the underside of the board where these components attach and you might see the telltale signs of a ring around the middle of the solder joint. You may even be able to wiggle the component lead in the middle of the solder joint. Using a low power soldering iron will allow you to touch these connections for a few seconds to 'reflow' the solder joints.
BTW, your problem was exactly as mine when I had an intermittant loss of spark...
Hope this helps,
Chuck.H
'89 TurboLookTarga, 333k miles
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