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      09-11-2021, 09:17 PM   #2
DenverSteve
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Drives: 2021 BMW
Join Date: Jul 2021
Location: Denver / L.A.

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Sorry. Not enough information - for on line diagnosis. I would think maybe torque-converter. However, with that great car, I would take it to the dealership and have it diagnosed expertly. We don't know you're mileage or other issues but take a look at the High-Pressure Fuel Pump as it is a known issue with these cars.
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