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Motor shuts off at low speeds, then battery dies, 2023 1500 3.6 etorque

outdoor7or24

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Been having issues with the truck since 18,000 miles.
Truck is 2023 1500 3.6 v6 with etorque (MGU).
Truck shuts off while at low speeds, almost like motor hesitates and then dies, sometimes when gently pressing accelerator/gas pedal.
Been to the dealer now about 10x, they reprogrammed truck, they checked electrical systems, and they replaced the MGU unit last year as they could not for sure figure out what is going on. Truck seemed to work okay. Service manager (SM) requested to bring it in immediately if it happens again, so this time I did when it died.

What happens when it dies/stalls... Truck shuts off. Restart and get low battery warning. If you drive without shutting and restarting the 12v battery begins to drain and will get below 10volts, then the dash lights go off, the truck will eventually begin to idle at 2k RPM, exhaust smells like rotten eggs (according to me and dealer mechanic), and this time it started overheating when I took it to the dealer and coolant fluid boils out of the overflow. That got the service managers excited!
HOWEVER, if you just shut down and restart after initial restart, the truck works fine.

Truck is at dealer since this just happened and they ran tests while it was still running before it died ( it pulled 25 something error codes, I'll share shortly).
Today they ran more test and it came back normal with no errors. SM said they would replace MGU again to see if that helps as mechanic said there have been some issues with his past experience.

I requested they check lithium battery - no report yet.
Beginning to wonder if it is fuel related, like an injector.

Surely this can be fixed I hope.

What have y'all experienced???
 
Am I the only one with this experience on the 3.6 liter motor?
 
It’s honestly the first I’ve ever heard of that . It sounds computer related just from what you describe happening . I really don’t know enough about the ETorque system to give any real advice . Sorry .
 
Dealer replaced the MGU (eTorque) unit. This is the 3rd unit on the truck. Will report back if there are any issues.

I wonder if it is caused by the running too rich that effected other model years (2021), however they state is only the 5.7 eTorque model.
 

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