the car runs hard like the engine is going to jump out terrible at startup and it seems like it is not getting gas.I had a diagnostic done and they told me i needed a crank shaft sensor temperature sensor o2 sensor and possibly a thermostat. i have changed everything except the o2 sensor car still runs terrible and sometimes it will not start. I have replace spark plugs wires and iginition coil timing belt serpentine belt all within the last year. I am at 147,000 miles.
I have a 03 vw jetta 2.0 the car has had problems starting. on 2003 Volkswagen Jetta
get second opinion, seek diagnostic to a good VW repair shop in your area,check the fuel distributor system and injection system, check fuel pressure. good luck