It has done this 3 times now and 3 different senerios,drove somewhere,paked and when I came back out 2 hours later it would crank but not start,next I was driving home from work and was sitting at a red light and it cut off and the 3rd time I was driving home from work and was coming around a curve and was braking for the light and the car cut off.
Might be the Fuel Pump Relay. They get intermittent like this. If it was never changed, I'd start there
It sounds like you have a bad MAF (Mass Airflow Sensor). This is in your air inlet tube, pull this out and check to see if there is any corrosion on it. If is one that has a coiled exposed wire, then ensure that the wire is not broke.
SOURCE: Car starts, then doesn't, then does, then doesn't
check the fuel pump relay! It sounds like it is one of your relays. If it was an electrical or sensor problem, the check engine light would be on.
SOURCE: 2002 Jetta 1.8t cuts offs sporadically
Here is the common cause of surges, stalls at stops, slow idle speed, erratic idle speed, rough idle and engine hesitation (and other problems), it is in most cases the idle speed control air-bypass valve and or throttle valve and upper intake, these area's get full of gunk and combustion residue over the miles and cause idle issues (stalls, low idle) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.
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