Ok so I've been driving my brothers camaro while my stang is in the paintshop and lately I've been noticing when I accelrate slowly, the car jumps. Its kinda like the transmission is sliping or something. Its sometimes when the gears shift and sometimes out of the blue. Note it also does this when I give it full throttle. the rpms will go up and it stalls (one or two times)on the acceleration before it fully goes. It kinda sounds like im shifting but its an auto so..... does anyone have an idea what could be causing this. (also its a 97 3.8v6 with about 125k miles).