Q: Between 55-70 mph only, feels like transmission slips. on 2007 Mercury Grand Marquis

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
37,000 miles on car, no increase in rpms, only "slips" for about 1 second.
(2) Answers
If it were slipping rpm would increase, even for that 1 second! Scanner can actually display data to show slippage. Have it tested.
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