AUDI 2008 avant 2.0L diesel gearbox
I was driving my car in high way at 70m/h and speed started to go down, but
the engine and everything was working perfectly I was trying to push
accelerator and 1/min X1000 was going up, but speed was going down... I
stopped and after tried again after 5 min... Speed was going up till 40m/h
and again the same... I was trying to push accelerator and 1/min X1000 was
going up, but speed was going down.. I stopped again and I tried after 10
min and everything was all right, what can be the problem?