Hello together, at my sister’s Suzuki Liana the engine warning lamp shines and the speed of the engine does not go over 3000 tours. The workshop wanted to replace the lamda probe. After that it worked briefly, now it is like before. I looked at the whole thing. The lamda probe does not look really new. The probe is rusty outside and the brass sleeve has started. I think the part was not replaced. My sister was again in the works – now plöt The connection between a speed limit on 3000 tours and a defective cat is not really clear to me. I had started the vehicle, so the engine was turned normally. Only during the test drive he suddenly lost power and the speed was no longer more than 3000 tours. Has anyone had such a problem, and can we help here? For tips we would be very grateful!