Car Jerking
My car is jerking frequently, but in no real pattern. It
jerks only when in drive. When its in park or neutral
it's fine. I just got a tune up 7 days ago where they
replaced my spark plugs, air filter, and got an oil
change, tire rotation, and new fuel injector. The
problem started the day I got all that done and my
car was fine for a week and now the same problem
is happening? Any idea what it could be? Going on
a big road trip in 6 days and need my car to be
reliable on that trip. Thanks!