1.8l ADR is jerking, does not accept gas, consumes 13 liters!!!

Hello, I have a problem with my engine. It is the 1.8l 20 valve with the engine identification letter ADR and it is installed in a 1997 Audi convertible. If it is “cold”, I can start normally in the first gear, but when switching into the second gear (speed after coupling in the 2 gears just below 2000 rpm) it does not take any gas for 1-3 seconds and jerks instead terribly. I can bypass the bad gas acceptance if I immediately pass the pedal over the “halfs” In addition, it consumes 13 liters of super. It doesn’t matter whether it’s urban traffic or constant 120km/h on the motorway. Candles all look uniformly “deer brown” and the ignition has been replaced after initial restless idle (perhaps working perfectly). I have read out fault memory once. A low voltage on the throttle was criticized, which abe This engine in the convertible consumes 9-9.5 liters according to the fuel monitor. I would be happy to get this problem solved as cheaply as possible, but he has to go to TüV or HU next month. I ask for help, Mfg Felix