engine shutters when down shifting, between 1500 and 2500 rpms, fuel mileage reduced.
Torque converter shudder? Doesn’t your vehicle have a 5/50000 powertrain warranty?
1 Like
Is the check engine light on? What are the error codes?
1 Like
+1
If this car is still covered by that Powertrain Warranty, the OP doesn’t need to try to diagnose this himself, and should simply take it to the dealership.