Hi am freshly baked Saabfahrer. Drive Saab 9000 2.3 with 107 kw build year 1990. For a few days it is extremely in a warm condition. Lambda probe and NGK candles are new. When the car is cold it starts great and I can ride it normally warm. It runs then also great. The workshop had screwed in the Lambda probe change running Beru candles for Mercedes A-Class which were all 4 after a day totally black and smelled after petrol ( electrodes, ceramic body everything sc hwarz) and they found extreme misignitions. Now, as I said, the right NGK are in it. Did the car drive yesterday about 30 km out of cold condition everything great!!! Lief round could give in the stand really gas, without errors, could also turn on and off in warm condition, without errors. Then the car was warm about 10 minutes before the purchase hall and nothing went more. Idle between 800 and 2000 up and down and strong jerking when trying to get home. And now???? Di-Box??? Throttle flap??? Air mass meters??? Who can help???