Hyundai Accent 1.3 GS Speed problems

Hello, Since my Golf 4 1.9 TDI had not been worth repairing, I bought a Hyundai Accent from 2001 with 75hp and 1.341L engine. The Hyundai has 118,000Km and I had the clutch re-made (it has slipped extremely, an old lady drove). The engine runs well, it also starts immediately. But I have a few little problems with the speed: 1: When I let mountain roll off the car (whether uncoupled or gear in it and clutch pressed) the speed rises without obvious reason on 2,000 rpm. 2: If I drive towards a traffic light and push the clutch over 2,000 rpm and stop the speed goes up to 1,500-2,000 rpm and again down to stand gas. 3: Sometimes in the stand it goes out or can almost not escape from the run. (Kam until now vll. 4 times before) It’s hard to explain, you know. If it should have landed in the wrong forum please move. I am happy with the Hyundai, only that makes with the speed The Hyundai now cost me 1500€ with new clutch and has almost euen Tüv, did I throw out the money ? Hope someone knows the reason or can give me tips. MfG. Matze