500SEC 1985 looses spark then restarts

So, I'm driving to work & it just dies. I coast to the side of the road and try to restart it & it starts. I replace the ignition module & lambda control unit. Any suggestions?

Reply to
tread
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Voltage regulator on the back of the alternator perhaps?

Reply to
marlinspike

Fuel pump relay is intermittent. It will happen again - sometime - and become more frequent.

Reply to
T.G. Lambach

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