Q: decelerating engine while approaching highway speed.
When coming to highway speeqd 45 to 50 , pressing strongly on the accelerator when the transmission should be shifting into high it Wil not shift unless you let off accelerator , if you continue to press firmly on accelerator and engine deaccelerates dramatically and will not shift unless you let up on the accelerator pedal .
My car has 40000 miles.
My car has an automatic transmission.
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