Mine sometimes had stalling issues when cold in reverse but turns out I wasn't giving enough time for torque converter to fill with fluid causing the stall, not sure what your issue may be since you're driving forward etc.. if you're getting 11mpgs I suggest researching a tuner I get 12.8-13.4 city and recent Rausch trip 16.8 highway. I know these HEMIs are sensitive to fluid levels, start there..

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