I have a 2003 recently bought E500 with approx. 150k on the car the car shift good and smoothly and everything is perfect the only thing is that when I'm accelerating slowly the rpm's will shoot up and go back down only from first to second sometimes third but the car has all the power when I floor it it doesn't do the rpm shooting thing it's weird anyone know what this could be ? The abs light is on if that could be affecting it also the car needs motor mounts if that could be the problem but yeah besides that the car is good it still drives good and shifts smoothly please any help or advice would be nice help me diagnose this
Thank you