What would cause my car to lose power and motor
Losing power as it if not changing
Loss of engine power will affect how a transmission shifts and a malfunctioning engine can cause all this. Possibilities are defects in electrical and fuel delivery and without proper diagnostics, the possibilities are near endless. You just need to have codes read. You could just go to a car parts store where they can do this, probably free, but then you'd still have to have a mechanic interpret the codes and run diagnostics to find the cause.