Jetta Loses acceleration

mfox2

My daughter has a 2006 Jetta and has recently experienced issues with acceleration. Merging on expressways and all of a sudden she can't seem to pick up speed and has to get over in the right lane because she is going so slow. Been to 2 different shops, A neighborhood shop couldn't find anything wrong and neither can the Volkswagen dealer.
No Error codes on the computer accept Knock Sensor. She's afraid to drive the car! Any suggestions?

Mr_Shiftright

So why wasn't the knock sensor issue addressed?

mfox2

Honestly I'm not sure. I think they said because you actually start hearing it knock and they and us are not hearing that.