HELP!! smoking a4 also loss of power
hi all, i was on the motor way when my a4 tsi sport lost power, when i came off the motor way it started to make a spining noise, so i pulled over ,then it started smoking( i mean smoking so bad i called the fire brigade) , i turned off the ignition & removed the key but it was though the accelarator was jammed & it was on full revs ( remember no keys!) .It eventually stopped after about 5/10 mins when the fire brigade turned up one of the crew recalled a similar situation where it was down to a sensor on the cat, i have no clue under an engine, but hope someone who as experienced this may be able to shed some light please? thank you!