My Swede doesn’t do more than 4000 rpm, why?

Hello guys, my Volvo V70 I 2.5 144 hp has been spinning for a few days. It doesn’t spin higher than 4000 rpm and the Vmax is at a good dunches max at 140 km/h. At the front of the engine there’s only a pretty nudity of engine noise and it’s very hard to get into the gears. In addition, my ABS sensor problem has not been solved despite the new sensor. I just don’t know any more and am at the end of my Latin. Error code read out only the ABS problem and no more. Maybe you can help me further, and hopefully it’s just small things. Thank you for many answers in advance Dear greetings to your Maggo