986 boxster died in heavy traffic

[pk2]

Carrot,

Normally your car won’t die do to to a bad battery because once running, the alternator provides all the juice you need to run your car and then some.

If it turns or cranks over after dieing it has nothing to do with your battery.

Fuel pump can be tested, I don’t think it’s a common problem though. For a number of reason, your observations and my conclusions, good or dicey, I doubt your alternator or battery is causing It to die abruptly.

As everybody suggests and you have a CEL, get the codes.

Regards, PK

[mikefocke]

you keep the revs up. I once drove 50 miles in my impecunious youth with no battery in the car (burned up because I hadn't checked the level) till I could get home and get enough $ to buy a battery. Kept it about 2k at all stops which meant takeoffs were tricky. Drop below that and the engine gets no spark.

[edbelton]

As someone pointed out already, the car won't abruptly die due to a bad battery, the alternator is enought to keep it running, as a matter of fact, if you unplug the batt with the engine running, you won't notice a thing. If the alternator annunciator wasnt illuminated, then it isn't the alternator either. How about the ignition coil, or the anti-theft system, I dont know, it is just a guess. Good luck.