No check engine light ever displays.
Chasing miss resulted in new plugs, coil rail, fuel injectors. Verified all injector signals with noid light. Miss remained.
Battery voltage is 12.4, not started. However, running battery voltage increases to 17.1 as rpm increases. At that voltage, miss starts and digital odometer goes out.
Dash volt meter responds to cluster self-test.
I’ve verified all the grounds I can find.
Scan tool shows no numbered codes, but does indicate a control module internal fault.
Is this possibly an internal voltage regulator failure?
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Thursday, October 3rd, 2019 AT 5:02 PM