Sounds like a short somewhere - possibly in the ignition circuit, sending power to the D-Jet system and maybe other systems. The pump runs during the first key-on for a few seconds to pressurize, so an intermittent short could cause that cycle to occur a lot - as well as the opening of the cold-start valve for cold starts - which can cause gas to go into the manifold and then eventually into the engine. Same if the injectors leak or are getting a false signal.

Check your wiring, starting with the ignition switch. Then check the EFI harness. Check all ground connections, also.

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Current:
2021 Charger Scat Pack Widebody "Sinabee"
2018 Durango R/T

Previous:
1972 280SE 4.5
2014 Jeep Grand Cherokee Limited "Hefe", 1992 Jeep Cherokee Laredo "Jeepy", 2006 Charger R/T "Hemi"
1999 Chrysler 300M - RIP @ 221k