Hello people would be nice if you could give me tips I drive a Volvo 850 from 1995 144hp automatic transmission and have the following problem. After about 20-30 min drive the Volvo has at once when traffic jams/starts/stops strong jerking without the engine running out and he doesn’t want to start up properly. After 1-2 minutes the problem is gone and I can heat up to 190kmh. The problem only occurs when the car gets warm and has to drive constantly. I have myself naturally I already read in and what was done: Ignition distributor, fingers, coils, cables (which looked really good) exchanged. After that I drove again today and in the traffic jam there was this power hole again but the jerking was easier, after a few seconds I was able to give gas again. Orginal spark plugs are on their way to me and are changed next. Do you think I should change the throttle valve or look something and what?