why is my asr and abs light constantly on??? on 1993 Mercedes-Benz 300SE

well i have an asr and abs light on in my car that constantly stays on after i begin driving and seems as if i cant gas the vehicle as it will cut back like its trying to receive the gas but no soon as i let off a bit it gets full throttle like feeling,a mech told me that this would affect the speeds i can take off due to some sensor. what will get these two lights out?? thanks in advance

Asked by for the 1993 Mercedes-Benz 300SE