Hej. A friend of mine just had a problem with his V70-combi (99 year, B5252S). I made him the timing belt with water pump 1 week ago, a service incl. plugs, as well as the sensor in the balancing tank (including exchange of the cooling water). Now he went on a big journey from Sweden to Germany and suddenly got a hot engine on the last meters in the traffic jam. As long as he drove, it was probably OK. In the traffic jam without wind it was then too hot and d It doesn’t seem to have started either, or only against jerking at the relay over the luefter. A yellow angel has already helped him, but in the next traffic jam it was right back. When he breaks the relay, everything works. Have I already had the thermostat tested (“Are both hoses hot from the Kuehler?”, but I still have no answer from him. I am thinking of a temperature fan or an interruption in the luefter control… Does he only have the one at the thermosta thäuse? Then he can pull it off and see if the Luefter starts. Up here in the country he never had the problem, because there is practically no traffic jam here :/ More ideas? From 900km distance I can help him on the phone unfortunately only partially