i have a dilema...i had my alternator replaced and the idiot who put it in, had the ground in the wrong place......so, now my 2001 jetta won't shift into overdrive.....it will go 60 and about 4000 to 4500 rpm, but it won't shift.... and it also is really sluggish....i have it at a small shop....anyone have any ideas in which direction to look?? any help would be greatly appreciated....