My 1999 Volkswagen Jetta has been loosing power as I drive down the road. It has died on me 6 times over the last 150 miles & it is quite dangerous! If I am lucky enough to get it off of the road, I let it sit for about 10 minutes and it will restart. Then it may go 20 miles, no problem, or die again. It often happens when I shift from 2nd to 3rd and I will feel a jerk like when the clutch is let out too quickly (but it isn't). My trusted mechanic says he can't figure out what is wrong and is willing for me to leave it with him tro drive. Can anyone help with this? abernton AT comcast.net