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pulling out of my girlfriend's driveway tonigh night, and my car stalls and then wont start. had to get it jumped. on the way home, everytime i pressed the brake pedal the lights would dim real dark, and then kick back on. pulled into my driveway, and the sob wont start again. sounds like the alt? maybe need a new battery too?

To me it sounds like the battery and not the alternator.

When the alt goes, you know. Your car will only run as long as the battery has a charge. Best thing to test it with is a multimeter. Find the voltage with the car running, that will tell you if the alt is dead or not.

Getting a new battery is a great idea. That should be done before upgrading an alt.

Jonny, do what william said, and test with a volt meter. You shoud read around 14.4 at the battery if the alt is working. If its much lower than that, you need a new alt. If the alt is the problem, be sure to give the battery some time on a charger. (just incase the battery is really low.)

Sounds like the alt is gone to me.

I lost two alts this way...Car starts running wierd and dieseling...

eh, well the car wont start at all. im gonna call a local shop in a few, to see if i can get it towed, to get fixed.

Its most likely the alt. I had a similar problem in my BMW. What happened what the alt. couldnt charge the battery so the battery just died and the alt. didnt put out enough amperage to run the necessary components on the car or charge the battery.

TEDD

Yep, sounds like the alt isn't outputting anything. So you ran the battery dead.

got it towed to a local shop. once it got there, it started, and everything was fine. they tested the battery, and the alt, and everything was ok. they said it might be some other internal electrical problem. so im gonna take to the dealer, where it still might be covered under warranty.

i had this exact same problem, out of no were i put some isley brothers, and i noticed that at one point my music cut off for a second and all my lights dimmed real low, scared the hell out of me, next day my battery would not start, got it jumped worked fine same thing dimming real low volume cut off for a split second, car would not start again , so i got a new battery and everything was fine, no more heavy dimming and no not starting car.