Hello dear Seat driver, we own a Seat Arosa 6H,Bj 1998,1.0l MPI Motor,50hp,Benzin. So far it was a (almost) super small car. Unfortunately we have now for longer the following problem. If the engine has operating temperature, it fluctuates with the speeds in the stand. For example at traffic lights, crossings etc. During the ride there is absolutely no problem. Occasionally he has it, which he even wants to go out in the stand. We have already renewed/tested the following: -compression übe rtest (13bar) -Renewed coolant sensor G62 -Renewed spark plugs -Renewed air filter -Renewed damper -Cleaned/adapted air volume meter -Renewed engine cleaner -Oil change including filter -Mass points cleaned in engine compartment -New Lima regulator installed -Battery checked -Zündverteiler cleaned -Zündkabel Voltage measured -Underpressure hoses checked -Error memory read out – no entries So slow I am at the end, and have no idea anymore. Who can me? help,or who knows this problem? Otherwise it’s a great weighing 🙂 Love greetings Björn